0001018164 FALSE 2021 FY P3Y P1Y P1Y http://fasb.org/us-gaap/2021-01-31#OtherAssets http://fasb.org/us-gaap/2021-01-31#OtherAssets http://fasb.org/us-gaap/2021-01-31#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent http://fasb.org/us-gaap/2021-01-31#AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent P4Y P1Y P1Y 0 0 0001018164 2021-01-01 2021-12-31 0001018164 2021-06-30 iso4217:USD 0001018164 2022-03-11 xbrli:shares 0001018164 2020-01-01 2020-12-31 0001018164 2021-12-31 0001018164 2020-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMember 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMember 2020-12-31 0001018164 wlfc:PropertyEquipmentAndFurnishingsExcludingEquipmentHeldForOperatingLeaseMember 2021-12-31 0001018164 wlfc:PropertyEquipmentAndFurnishingsExcludingEquipmentHeldForOperatingLeaseMember 2020-12-31 iso4217:USD xbrli:shares 0001018164 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2021-12-31 0001018164 us-gaap:VariableInterestEntityPrimaryBeneficiaryMember 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember 2020-01-01 2020-12-31 0001018164 wlfc:MaintenanceReserveRevenueMember 2021-01-01 2021-12-31 0001018164 wlfc:MaintenanceReserveRevenueMember 2020-01-01 2020-12-31 0001018164 wlfc:SparePartsAndEquipmentSalesMember 2021-01-01 2021-12-31 0001018164 wlfc:SparePartsAndEquipmentSalesMember 2020-01-01 2020-12-31 0001018164 wlfc:AssetTransitionFeesMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetTransitionFeesMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember 2020-01-01 2020-12-31 0001018164 us-gaap:PreferredStockMember 2019-12-31 0001018164 us-gaap:CommonStockMember 2019-12-31 0001018164 us-gaap:AdditionalPaidInCapitalMember 2019-12-31 0001018164 us-gaap:RetainedEarningsMember 2019-12-31 0001018164 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2019-12-31 0001018164 2019-12-31 0001018164 us-gaap:RetainedEarningsMember 2020-01-01 2020-12-31 0001018164 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-01-01 2020-12-31 0001018164 us-gaap:AdditionalPaidInCapitalMember 2020-01-01 2020-12-31 0001018164 us-gaap:CommonStockMember 2020-01-01 2020-12-31 0001018164 us-gaap:PreferredStockMember 2020-01-01 2020-12-31 0001018164 us-gaap:PreferredStockMember 2020-12-31 0001018164 us-gaap:CommonStockMember 2020-12-31 0001018164 us-gaap:AdditionalPaidInCapitalMember 2020-12-31 0001018164 us-gaap:RetainedEarningsMember 2020-12-31 0001018164 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2020-12-31 0001018164 us-gaap:RetainedEarningsMember 2021-01-01 2021-12-31 0001018164 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-01-01 2021-12-31 0001018164 us-gaap:CommonStockMember 2021-01-01 2021-12-31 0001018164 us-gaap:AdditionalPaidInCapitalMember 2021-01-01 2021-12-31 0001018164 us-gaap:PreferredStockMember 2021-01-01 2021-12-31 0001018164 us-gaap:PreferredStockMember 2021-12-31 0001018164 us-gaap:CommonStockMember 2021-12-31 0001018164 us-gaap:AdditionalPaidInCapitalMember 2021-12-31 0001018164 us-gaap:RetainedEarningsMember 2021-12-31 0001018164 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2021-12-31 0001018164 wlfc:WillisEngineStructuredTrustIIIMember 2021-01-01 2021-12-31 xbrli:pure 0001018164 wlfc:WillisEngineStructuredTrustIVMember 2021-01-01 2021-12-31 0001018164 wlfc:WESTVNotesMember wlfc:WillisEngineStructuredTrustVMember 2020-03-31 wlfc:debtSeries 0001018164 wlfc:WESTVSeriesANotesMember wlfc:WillisEngineStructuredTrustVMember 2020-03-31 0001018164 wlfc:WESTVSeriesBNotesMember wlfc:WillisEngineStructuredTrustVMember 2020-03-31 0001018164 wlfc:WESTVSeriesCNotesMember wlfc:WillisEngineStructuredTrustVMember 2020-03-31 0001018164 wlfc:WESTVINotesMember wlfc:WillisEngineStructuredTrustVIMember 2021-05-31 0001018164 wlfc:WESTVISeriesANotesMember wlfc:WillisEngineStructuredTrustVIMember 2021-05-31 0001018164 wlfc:WillisEngineStructuredTrustVIMember wlfc:WESTVISeriesBNotesMember 2021-05-31 0001018164 wlfc:WESTVISeriesCNotesMember wlfc:WillisEngineStructuredTrustVIMember 2021-05-31 0001018164 us-gaap:SalesRevenueNetMember wlfc:OneCustomerMember us-gaap:CustomerConcentrationRiskMember 2020-01-01 2020-12-31 0001018164 us-gaap:SalesRevenueNetMember wlfc:OneCustomerMember us-gaap:CustomerConcentrationRiskMember 2021-01-01 2021-12-31 0001018164 wlfc:EnginesAndRelatedEquipmentMember us-gaap:PropertyAvailableForOperatingLeaseMember 2021-01-01 2021-12-31 0001018164 wlfc:EnginesAndRelatedEquipmentMember us-gaap:PropertyAvailableForOperatingLeaseMember 2021-12-31 0001018164 wlfc:NewEngineMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MaximumMember 2021-01-01 2021-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MinimumMember 2021-01-01 2021-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MaximumMember 2021-01-01 2021-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MinimumMember 2021-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MaximumMember 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember wlfc:MarineVesselsMember 2021-01-01 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember wlfc:MarineVesselsMember 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember srt:MinimumMember wlfc:SparePartPackagesMember 2021-01-01 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember wlfc:SparePartPackagesMember srt:MaximumMember 2021-01-01 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember wlfc:SparePartPackagesMember 2021-12-31 0001018164 wlfc:EnginesAndRelatedEquipmentMember us-gaap:PropertyAvailableForOperatingLeaseMember 2020-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember 2021-12-31 0001018164 wlfc:AircraftMember us-gaap:PropertyAvailableForOperatingLeaseMember 2020-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember wlfc:MarineVesselsMember 2020-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember 2020-12-31 0001018164 wlfc:OlderGenerationEnginesMember us-gaap:PropertyAvailableForOperatingLeaseMember 2021-12-31 wlfc:engine 0001018164 wlfc:OlderGenerationEnginesMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MinimumMember 2021-01-01 2021-12-31 0001018164 wlfc:OlderGenerationEnginesMember us-gaap:PropertyAvailableForOperatingLeaseMember srt:MaximumMember 2021-01-01 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember 2021-01-01 2021-12-31 0001018164 us-gaap:PropertyAvailableForOperatingLeaseMember 2020-01-01 2020-12-31 0001018164 srt:MinimumMember 2021-01-01 2021-12-31 0001018164 srt:MaximumMember 2021-01-01 2021-12-31 0001018164 wlfc:WestIIINotesMember 2021-01-01 2021-12-31 0001018164 wlfc:WestIIINotesMember 2021-12-31 0001018164 wlfc:WESTIVNotesMember 2021-01-01 2021-12-31 0001018164 wlfc:WESTIVNotesMember 2021-12-31 0001018164 wlfc:WESTVNotesMember 2021-01-01 2021-12-31 0001018164 wlfc:WESTVNotesMember 2021-12-31 0001018164 wlfc:WESTVINotesMember 2021-01-01 2021-12-31 0001018164 wlfc:WESTVINotesMember 2021-12-31 0001018164 wlfc:WESTIIINotesWESTIVNotesAndWESTVNotesMember 2021-01-01 2021-12-31 0001018164 wlfc:WESTIIINotesWESTIVNotesAndWESTVNotesMember 2021-12-31 0001018164 us-gaap:CustomerRelationshipsMember 2021-01-01 2021-12-31 0001018164 us-gaap:IndefinitelivedIntangibleAssetsMember 2021-12-31 0001018164 wlfc:ContingenciesRelatedToCOVID19Member 2020-12-31 0001018164 wlfc:ContingenciesRelatedToCOVID19Member 2021-01-01 2021-12-31 0001018164 wlfc:ContingenciesRelatedToCOVID19Member 2020-01-01 2020-12-31 0001018164 srt:MinimumMember 2021-12-31 0001018164 srt:MaximumMember 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:MaintenanceReserveRevenueMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:MaintenanceReserveRevenueMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:MaintenanceReserveRevenueMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:SparePartsAndEquipmentSalesMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsAndEquipmentSalesMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:SparePartsAndEquipmentSalesMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetTransitionFeesMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetTransitionFeesMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetTransitionFeesMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:OtherRevenueMember 2021-01-01 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:OtherRevenueMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:OtherRevenueMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 wlfc:OtherRevenueMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:MaintenanceReserveRevenueMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:MaintenanceReserveRevenueMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:MaintenanceReserveRevenueMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:SparePartsAndEquipmentSalesMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsAndEquipmentSalesMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:SparePartsAndEquipmentSalesMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember wlfc:OtherRevenueMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:OtherRevenueMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:OtherRevenueMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 wlfc:OtherRevenueMember 2020-01-01 2020-12-31 wlfc:noteReceivable wlfc:aircraft.wlfc:marineVessel wlfc:region 0001018164 wlfc:LeaseRentRevenueMember country:US 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember country:US 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:EuropeMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:EuropeMember 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:AsiaMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:AsiaMember 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:SouthAmericaMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember srt:SouthAmericaMember 2020-01-01 2020-12-31 0001018164 country:MX wlfc:LeaseRentRevenueMember 2021-01-01 2021-12-31 0001018164 country:MX wlfc:LeaseRentRevenueMember 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember country:CA 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember country:CA 2020-01-01 2020-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:MiddleEastMember 2021-01-01 2021-12-31 0001018164 wlfc:LeaseRentRevenueMember us-gaap:MiddleEastMember 2020-01-01 2020-12-31 0001018164 srt:EuropeMember 2021-12-31 0001018164 srt:EuropeMember 2020-12-31 0001018164 country:US 2021-12-31 0001018164 country:US 2020-12-31 0001018164 srt:AsiaMember 2021-12-31 0001018164 srt:AsiaMember 2020-12-31 0001018164 country:MX 2021-12-31 0001018164 country:MX 2020-12-31 0001018164 srt:SouthAmericaMember 2021-12-31 0001018164 srt:SouthAmericaMember 2020-12-31 0001018164 country:CA 2021-12-31 0001018164 country:CA 2020-12-31 0001018164 us-gaap:MiddleEastMember 2021-12-31 0001018164 us-gaap:MiddleEastMember 2020-12-31 0001018164 wlfc:OffLeaseAndOtherEquipmentMember 2021-12-31 0001018164 wlfc:OffLeaseAndOtherEquipmentMember 2020-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMonthToMonthMaturityMember 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingInNextTwelveMonthsMember 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingInYear2Member 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingInYear3Member 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingInYear4Member 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingInYear5Member 2021-12-31 0001018164 wlfc:EquipmentHeldForOperatingLeaseMaturingThereafterMember 2021-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember 2021-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember 2021-01-01 2021-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember wlfc:EquipmentHeldForOperatingLeaseMember 2021-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember 2021-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember 2021-01-01 2021-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember wlfc:EquipmentHeldForOperatingLeaseMember 2021-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember 2019-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember 2019-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember 2020-01-01 2020-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember 2020-01-01 2020-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember 2020-12-31 0001018164 wlfc:CSCWillisEngineLeaseCompanyLimitedMember 2020-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember us-gaap:OtherIncomeMember 2021-01-01 2021-12-31 0001018164 wlfc:WillisMitsuiAndCompanyEngineSupportLimitedMember us-gaap:OtherIncomeMember 2020-01-01 2020-12-31 wlfc:equipment 0001018164 us-gaap:LondonInterbankOfferedRateLIBORMember wlfc:SecuredCreditFacilityDueApril2021Member 2021-01-01 2021-12-31 0001018164 us-gaap:RevolvingCreditFacilityMember wlfc:SecuredCreditFacilityDueApril2021Member 2021-12-31 0001018164 wlfc:SecuredCreditFacilityDueApril2021Member 2021-12-31 0001018164 wlfc:SecuredCreditFacilityDueApril2021Member 2020-12-31 0001018164 wlfc:WESTVISeriesANotesMember 2021-12-31 0001018164 wlfc:WESTVISeriesANotesMember 2020-12-31 0001018164 wlfc:WESTVISeriesBNotesMember 2021-12-31 0001018164 wlfc:WESTVISeriesBNotesMember 2020-12-31 0001018164 wlfc:WESTVISeriesCNotesMember 2021-12-31 0001018164 wlfc:WESTVISeriesCNotesMember 2020-12-31 0001018164 wlfc:WESTVSeriesANotesMember 2021-12-31 0001018164 wlfc:WESTVSeriesANotesMember 2020-12-31 0001018164 wlfc:WESTVSeriesBNotesMember 2021-12-31 0001018164 wlfc:WESTVSeriesBNotesMember 2020-12-31 0001018164 wlfc:WESTVSeriesCNotesMember 2021-12-31 0001018164 wlfc:WESTVSeriesCNotesMember 2020-12-31 0001018164 wlfc:WESTIVSeriesANotesMember 2021-12-31 0001018164 wlfc:WESTIVSeriesANotesMember 2020-12-31 0001018164 wlfc:WESTIVSeriesBNotesMember 2021-12-31 0001018164 wlfc:WESTIVSeriesBNotesMember 2020-12-31 0001018164 wlfc:WESTIIISeriesANotesMember 2021-12-31 0001018164 wlfc:WESTIIISeriesANotesMember 2020-12-31 0001018164 wlfc:WESTIIISeriesBNotesMember 2021-12-31 0001018164 wlfc:WESTIIISeriesBNotesMember 2020-12-31 0001018164 us-gaap:LondonInterbankOfferedRateLIBORMember wlfc:NotesPayableDueJuly2022Member srt:MinimumMember 2021-01-01 2021-12-31 0001018164 us-gaap:LondonInterbankOfferedRateLIBORMember wlfc:NotesPayableDueJuly2022Member srt:MaximumMember 2021-01-01 2021-12-31 0001018164 wlfc:NotesPayableDueJuly2022Member 2021-12-31 0001018164 wlfc:NotesPayableDueJuly2022Member 2020-12-31 0001018164 wlfc:NotesPayableDueJuly2024Member 2021-12-31 0001018164 wlfc:NotesPayableDueJuly2024Member 2020-12-31 0001018164 us-gaap:RevolvingCreditFacilityMember wlfc:SecuredCreditFacilityDueApril2021Member 2019-06-30 0001018164 us-gaap:RevolvingCreditFacilityMember wlfc:SecuredCreditFacilityDueApril2021Member 2020-12-31 0001018164 wlfc:WESTVMember wlfc:WESTVNotesMember 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesANotesMember 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesBNotesMember 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesCNotesMember 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesANotesMember 2020-03-01 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesBNotesMember 2020-03-01 2020-03-31 0001018164 wlfc:WESTVMember wlfc:WESTVSeriesCNotesMember 2020-03-01 2020-03-31 0001018164 wlfc:Class2012ATermNotesMember 2020-03-01 2020-03-31 0001018164 wlfc:WESTVINotesMember wlfc:WESTVIMember 2021-05-31 0001018164 wlfc:WESTVIMember wlfc:WESTVISeriesANotesMember 2021-05-31 0001018164 wlfc:WESTVIMember wlfc:WESTVISeriesBNotesMember 2021-05-31 0001018164 wlfc:WESTVISeriesCNotesMember wlfc:WESTVIMember 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesANotesMember 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesBNotesMember 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesCNotesMember 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesANotesMember 2021-05-01 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesBNotesMember 2021-05-01 2021-05-31 0001018164 wlfc:WESTVMember wlfc:WESTVISeriesCNotesMember 2021-05-01 2021-05-31 0001018164 2021-05-31 0001018164 us-gaap:InterestRateContractMember 2021-12-31 0001018164 us-gaap:InterestRateContractMember 2020-12-31 wlfc:agreement 0001018164 us-gaap:InterestRateContractMember 2021-01-01 2021-03-31 0001018164 wlfc:A2021SwapAgreementsGroup1Member 2021-12-31 0001018164 wlfc:A2021SwapAgreementsGroup1Member 2021-01-01 2021-12-31 0001018164 wlfc:A2021SwapAgreementsGroup2Member 2021-12-31 0001018164 wlfc:A2021SwapAgreementsGroup2Member 2021-01-01 2021-12-31 0001018164 wlfc:A2019SwapAgeementMember 2021-12-31 0001018164 wlfc:A2019SwapAgeementMember 2021-01-01 2021-12-31 0001018164 wlfc:A2016SwapAgreementMember 2021-04-01 2021-04-30 0001018164 us-gaap:InterestRateContractMember 2021-01-01 2021-12-31 0001018164 us-gaap:InterestRateContractMember 2020-01-01 2020-12-31 0001018164 us-gaap:InterestRateContractMember us-gaap:InterestExpenseMember us-gaap:CashFlowHedgingMember 2021-01-01 2021-12-31 0001018164 us-gaap:InterestRateContractMember us-gaap:InterestExpenseMember us-gaap:CashFlowHedgingMember 2020-01-01 2020-12-31 0001018164 us-gaap:CashFlowHedgingMember 2021-01-01 2021-12-31 0001018164 us-gaap:CashFlowHedgingMember 2020-01-01 2020-12-31 0001018164 us-gaap:InternalRevenueServiceIRSMember 2021-12-31 0001018164 us-gaap:StateAndLocalJurisdictionMember 2021-12-31 0001018164 us-gaap:CaliforniaFranchiseTaxBoardMember us-gaap:StateAndLocalJurisdictionMember 2021-12-31 0001018164 wlfc:GeorgiaDepartmentOfRevenueMember us-gaap:StateAndLocalJurisdictionMember 2021-12-31 0001018164 us-gaap:FairValueMeasurementsNonrecurringMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetsToBeSoldOrPartedOutMember 2021-01-01 2021-12-31 wlfc:airframe 0001018164 wlfc:ImpairedAssetsMember 2021-01-01 2021-12-31 0001018164 wlfc:AssetsToBeSoldOrPartedOutMember us-gaap:PropertyAvailableForOperatingLeaseMember 2021-12-31 0001018164 us-gaap:FairValueMeasurementsNonrecurringMember 2020-01-01 2020-12-31 0001018164 wlfc:AssetsToBeSoldOrPartedOutMember us-gaap:FairValueMeasurementsNonrecurringMember 2020-01-01 2020-12-31 0001018164 wlfc:AssetsToBeSoldOrPartedOutMember 2020-01-01 2020-12-31 0001018164 us-gaap:FairValueMeasurementsNonrecurringMember wlfc:ImpairedAssetsMember 2020-01-01 2020-12-31 0001018164 wlfc:ImpairedAssetsMember 2020-01-01 2020-12-31 0001018164 wlfc:MaintenanceServicesMember 2021-05-31 0001018164 us-gaap:CapitalAdditionsMember 2020-12-31 wlfc:modernEngine 0001018164 us-gaap:CapitalAdditionsMember srt:MinimumMember 2020-12-31 0001018164 us-gaap:CapitalAdditionsMember srt:MaximumMember 2020-12-31 0001018164 wlfc:SeriesOnePreferredStockMember 2016-10-31 0001018164 wlfc:SeriesOnePreferredStockMember 2016-10-01 2016-10-31 0001018164 wlfc:SeriesTwoPreferredStockMember 2017-09-30 0001018164 wlfc:SeriesTwoPreferredStockMember 2017-09-01 2017-09-30 0001018164 wlfc:SeriesOnePreferredStockMember 2020-01-01 2020-12-31 0001018164 wlfc:SeriesOnePreferredStockMember 2021-01-01 2021-12-31 0001018164 wlfc:IncentiveAwardPlan2007Member 2021-01-01 2021-12-31 0001018164 wlfc:IncentiveAwardPlan2007Member 2020-01-01 2020-12-31 0001018164 wlfc:The2021StockIncentivePlanMember 2021-01-01 2021-12-31 0001018164 wlfc:The2021StockIncentivePlanMember 2020-01-01 2020-12-31 0001018164 wlfc:EmployeeStockPurchasePlanMember 2021-01-01 2021-12-31 0001018164 wlfc:EmployeeStockPurchasePlanMember 2020-01-01 2020-12-31 0001018164 wlfc:IncentiveAwardPlan2007Member 2021-12-31 0001018164 wlfc:IncentiveAwardPlan2007Member srt:MinimumMember 2021-01-01 2021-12-31 0001018164 wlfc:IncentiveAwardPlan2007Member srt:MaximumMember 2021-01-01 2021-12-31 0001018164 us-gaap:StockOptionMember wlfc:IncentiveAwardPlan2007Member 2021-12-31 0001018164 wlfc:The2018StockIncentivePlanMember 2021-12-31 0001018164 wlfc:The2021StockIncentivePlanMember 2021-11-01 2021-11-30 0001018164 srt:MinimumMember wlfc:The2018StockIncentivePlanMember 2021-01-01 2021-12-31 0001018164 wlfc:The2018StockIncentivePlanMember srt:MaximumMember 2021-01-01 2021-12-31 0001018164 us-gaap:RestrictedStockMember wlfc:The2021StockIncentivePlanMember 2021-01-01 2021-12-31 0001018164 us-gaap:RestrictedStockMember wlfc:The2021StockIncentivePlanMember 2021-12-31 0001018164 us-gaap:RestrictedStockMember 2019-12-31 0001018164 us-gaap:RestrictedStockMember 2020-01-01 2020-12-31 0001018164 us-gaap:RestrictedStockMember 2020-12-31 0001018164 us-gaap:RestrictedStockMember 2021-01-01 2021-12-31 0001018164 us-gaap:RestrictedStockMember 2021-12-31 0001018164 us-gaap:RestrictedStockMember wlfc:IncentiveAwardPlan2007Member 2021-01-01 2021-12-31 0001018164 us-gaap:RestrictedStockMember wlfc:IncentiveAwardPlan2007Member 2021-12-31 0001018164 wlfc:EmployeeStockPurchasePlanMember 2021-11-10 0001018164 srt:ChiefExecutiveOfficerMember 2021-12-02 2021-12-02 0001018164 srt:ChiefExecutiveOfficerMember 2021-10-01 2021-10-01 0001018164 wlfc:MikchalkLakeLLCMember 2021-01-01 2021-12-31 0001018164 srt:ChiefExecutiveOfficerMember 2021-01-01 2021-12-31 0001018164 srt:ChiefExecutiveOfficerMember 2020-01-01 2020-12-31 0001018164 2021-11-11 wlfc:segment.0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:IntersegmentEliminationMember 2021-01-01 2021-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2020-01-01 2020-12-31 0001018164 wlfc:ManagedServicesAndOtherRevenueMember us-gaap:IntersegmentEliminationMember 2020-01-01 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2021-12-31 0001018164 us-gaap:IntersegmentEliminationMember 2021-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:LeasingAndRelatedOperationsSegmentMember 2020-12-31 0001018164 us-gaap:OperatingSegmentsMember wlfc:SparePartsSalesSegmentMember 2020-12-31 0001018164 us-gaap:IntersegmentEliminationMember 2020-12-31 0001018164 srt:BoardOfDirectorsChairmanMember us-gaap:SubsequentEventMember 2022-03-03 0001018164 us-gaap:SubsequentEventMember srt:ChiefExecutiveOfficerMember 2022-03-03 0001018164 us-gaap:AllowanceForCreditLossMember 2019-12-31 0001018164 us-gaap:AllowanceForCreditLossMember 2020-01-01 2020-12-31 0001018164 us-gaap:AllowanceForCreditLossMember 2020-12-31 0001018164 us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember 2019-12-31 0001018164 us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember 2020-01-01 2020-12-31 0001018164 us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember 2020-12-31 0001018164 us-gaap:AllowanceForCreditLossMember 2021-01-01 2021-12-31 0001018164 us-gaap:AllowanceForCreditLossMember 2021-12-31 0001018164 us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember 2021-01-01 2021-12-31 0001018164 us-gaap:ValuationAllowanceOfDeferredTaxAssetsMember 2021-12-31
Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K

☒ | Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2021

☐ | Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Commission File Number: 001-15369
WILLIS LEASE FINANCE CORPORATION
(Exact name of registrant as specified in its charter)

Delaware |  | 68-0070656
(State or other jurisdiction of incorporation or organization) |  | (IRS Employer Identification No.)

4700 Lyons Technology Parkway | Coconut Creek | Florida |  | 33073
(Address of principal executive offices) |  | (Zip Code)

Registrant’s telephone number, including area code (561) 349-9989
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class |  | Trading Symbol |  | Name of exchange on which registered
Common Stock, $0.01 par value per share |  | WLFC |  | Nasdaq Global Market

Securities registered pursuant to Section 12(g) of the Act: None.
Indicate by check mark if the registrant is a well-known seasoned issuer as defined in Rule 405 of the Securities Act. Yes ☐ No ☒
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer | ☐ | Accelerated Filer | ☒
Non-Accelerated Filer | ☐ | Smaller Reporting Company | ☒
|  | Emerging Growth Company | ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒
The aggregate market value of voting stock held by non-affiliates of the registrant as of the last business day of the registrant’s most recently completed second fiscal quarter (June 30, 2021) was approximately $140.6 million (based on a closing sale price of $42.86 per share as reported on the NASDAQ Stock Market).
The number of shares of the registrant’s Common Stock outstanding as of March 11, 2022 was 5,937,338.
DOCUMENTS INCORPORATED BY REFERENCE
The Company’s Proxy Statement for the 2022 Annual Meeting of Stockholders is incorporated by reference into Part III of this Form 10-K.

Table of Contents
WILLIS LEASE FINANCE CORPORATION
2021 FORM 10-K ANNUAL REPORT
TABLE OF CONTENTS

| PART I |
Item 1. | Business | 3
Item 1A | Risk Factors | 9
Item 1B | Unresolved Staff Comments | 22
Item 2. | Properties | 22
Item 3. | Legal Proceedings | 23
Item 4. | Mine Safety Disclosures | 23
| PART II |
Item 5. | Market for Registrant’s Common Equity and Related Stockholder Matters | 23
Item 6. | Selected Financial Data | 24
Item 7. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 24
Item 7A. | Quantitative and Qualitative Disclosures About Market Risk | 33
Item 8. | Financial Statements and Supplementary Data | 33
Item 9. | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure | 33
Item 9A. | Controls and Procedures | 33
Item 9B. | Other Information | 34
| PART III |
Item 10. | Directors and Executive Officers of the Registrant | 34
Item 11. | Executive Compensation | 34
Item 12. | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters | 34
Item 13. | Certain Relationships and Related Transactions | 34
Item 14. | Principal Accountant Fees and Services | 34
| PART IV |
Item 15. | Exhibits and Financial Statement Schedules | 35
Item 16. | Form 10-K Summary | 39

2

Table of Contents
PART I
ITEM 1. BUSINESS
INTRODUCTION
Willis Lease Finance Corporation with its subsidiaries (“WLFC” or the “Company”) is a leading lessor and servicer of commercial aircraft and aircraft engines. Our principal business objective is to build value for our shareholders by acquiring commercial aircraft and engines and managing those assets in order to provide a return on investment, primarily through lease rent and maintenance reserve revenues, as well as through management fees earned for managing assets owned by other parties. As of December 31, 2021, our $1,991.4 million equipment held for operating lease portfolio and $115.5 million notes receivable represented 304 engines, twelve aircraft, one marine vessel and other leased parts and equipment with 76 lessees in 40 countries. In addition to our owned portfolio, as of December 31, 2021, we managed a total lease portfolio of 475 engines, aircraft and related equipment for other parties.
Willis Aeronautical Services, Inc. (“Willis Aero”) is a wholly owned subsidiary whose primary focus is the sale of aircraft engine parts and materials through the acquisition or consignment of aircraft and engines.
Willis Asset Management Limited (“Willis Asset Management”) is a wholly owned subsidiary whose primary focus is the engine management and consulting business. Willis Asset Management had 434 engines, excluding WLFC engines, under management as of December 31, 2021.
We are a Delaware corporation, incorporated in 1998. Our executive offices are located at 4700 Lyons Technology Parkway, Coconut Creek, Florida 33073. We transact business directly and through our subsidiaries and consolidated variable interest entities (“VIE”) unless otherwise indicated.
We maintain a website at www.willislease.com where our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and all amendments to those reports are available without charge, as soon as reasonably practicable following the time they are filed with or furnished to the SEC. The SEC also maintains an electronic Internet site that contains our reports, proxies and information statements, and other information that we file or furnish at http://www.sec.gov.
We separate our business into two reportable segments, Leasing and Related Operations and Spare Parts Sales. Our business activities by reportable segment are described below.
Leasing and Related Operations
Our strategy is to lease aircraft and aircraft engines and provide related services to a diversified group of commercial aircraft operators and maintenance, repair and overhaul organizations (“MROs”) worldwide. Commercial aircraft operators need engines in addition to those installed on the aircraft that they operate. Spare engines are required to support fleet operation during the highly regulated maintenance cycle of aircraft engines. Furthermore, unscheduled events such as mechanical failure, Federal Aviation Administration (“FAA”) airworthiness directives or manufacturer-recommended actions for maintenance, repair and overhaul of engines result in the need for spare engines. Based on industry data, we estimate that the total number of spare engines needed is around 12% of the total number of installed engines, including both owned and leased spare engines.
Our engine portfolio primarily consists of noise-compliant Stage IV commercial jet engines manufactured by CFMI, General Electric, Pratt & Whitney, Rolls Royce and International Aero Engines. These engines generally may be used on one or more aircraft types and are the most widely used engines in the world, powering Airbus, Boeing, Bombardier and Embraer aircraft.
We acquire engines for our leasing portfolio in a number of ways. We enter into sale and lease back transactions with operators of aircraft, original equipment manufacturers of engines and providers of engine maintenance cost per hour services. We also purchase both new and used engines that are subject to a lease when purchased and on a speculative basis (i.e. without a lease attached from manufacturers or other parties which own such engines).
Total revenues from our Leasing and Related Operations reportable segment was 93.6% and 94.1% of the respective total consolidated revenue for the years ended December 31, 2021 and 2020, respectively.
At December 31, 2021, approximately 74% of our on-lease engines, aircraft, and related equipment (all of which we sometimes refer to as “equipment”) by net book value are leased and operated internationally. Substantially all leases relating to this equipment are denominated and payable in U.S. dollars, which is customary in the industry. Future leases may provide for payments to be made in euros or other foreign currencies. In 2021, we leased our equipment to lessees domiciled in seven geographic regions.
3

Table of Contents
Spare Parts Sales
Our wholly owned subsidiary Willis Aero primarily engages in the sale of aircraft engine parts and materials through the acquisition or consignment of engines from third parties or from the leasing portfolio. This business segment enables us to provide end-of-life solutions for the growing supply of surplus aircraft and engines, as well as manage the full lifecycle of our lease assets, enhance the returns on our engine portfolio and create incremental value for our shareholders.
COVID-19 Impact
As a result of the COVID-19 pandemic, we have continued to temporarily close our headquarters and other offices, require our employees and contractors to predominately work remotely, and implement travel restrictions, all of which represent a significant disruption in how we operate our business. We have also taken various proactive actions in an attempt to mitigate the financial impact of the COVID-19 pandemic. During 2020, 9% of our employees were either furloughed, or subject to a form of reduced compensation which was subsequently reversed in 2021. The operations of our partners and customers have likewise been disrupted. The worldwide spread of the COVID-19 virus has resulted in a global slowdown of economic activity, and more specifically within the aviation industry. While the duration and extent of the COVID-19 pandemic depends on future developments that cannot be accurately predicted at this time and the ultimate societal and economic impact of the COVID-19 pandemic remains unknown. In particular, the ongoing COVID-19 pandemic has caused significant disruptions to the airline industry and has resulted in a dramatic reduction in demand for air travel domestically and abroad, which is likely to continue for the foreseeable future. Lower demand for air travel in turn presents significant risks to our Company, resulting in impacts which have adversely affected our business, results of operation, and financial condition. Lower demand for spare parts and engine and airframe leasing has negatively impacted collections and accounts receivable, caused our lessee customers to not enter into new leases, resulted in reduced spending by new and existing customers for leases or spare parts or equipment, resulted in lower usage fees, caused some of our customers to go out of business, and limited the ability of our personnel to travel to customers and potential customers. We are not able to evaluate or foresee the full extent of these impacts at the current time. During the year ended December 31, 2021, we continued to experience a reduction in lease rent and maintenance reserve revenues as compared to the pre-COVID-19 environment, as well as a decline in spare parts and equipment sales. Additionally, we have, in certain situations, agreed to rent concessions which resulted in a total reduction to rent revenues of $0.5 million during 2021. Rent concessions during 2020 resulted in a total reduction of rent revenue of $6.5 million. The COVID-19 pandemic has materially affected our business and financial results for the year ended December 31, 2021, and may continue to do so indefinitely thereafter.
The scope and nature of the impact of COVID-19 on the airline industry, and in turn our business, continue to evolve and the outcomes are uncertain. Given the uncertainty in the rapidly changing market and economic conditions related to COVID-19, we will continue to evaluate the nature and extent of the impact to our business and financial position. The ultimate extent of the effects of the COVID-19 pandemic on our Company will depend on future developments, and such effects could exist for an extended period of time.
INDUSTRY BACKGROUND - THE DEMAND FOR LEASED AIRCRAFT ENGINES
Historically, commercial aircraft operators owned rather than leased their spare engines. As engines become more powerful and technically sophisticated, they also become more expensive to acquire and maintain. In part due to cash constraints on commercial aircraft operators and the costs associated with engine ownership, commercial aircraft operators have become more cost-conscious and now utilize operating leases for a portion of their spare engines and are therefore better able to manage their finances in this capital-intensive business. Engine leasing is a specialized business that has evolved into a discrete sector of the commercial aviation market. Participants in this sector need access to capital, as well as specialized technical knowledge, in order to compete successfully.
Growth in the spare engine leasing industry is dependent on two fundamental drivers:
•the number of commercial aircraft, and therefore engines, in the market; and
•the proportion of engines that are leased, rather than owned, by commercial aircraft operators.
While COVID-19 has significantly impacted engine leasing, we still believe leasing will increase over the long term but more slowly as we emerge from the pandemic.
Increased number of aircraft, and therefore engines, in the market
We believe that the number of commercial and cargo aircraft, and hence spare engines, will increase. Boeing projects 3.1% annual growth in the global commercial jet fleet, increasing the current fleet to over 49,405 aircraft by 2040. Aircraft equipment manufacturers have predicted such an increase in aircraft to address the rapid growth of both passenger and cargo traffic in the Asian markets, as well as demand for new aircraft in more mature markets. While we believe these predictions are accurate over the long
4

Table of Contents
term, COVID-19 has materially disrupted the airline industry and significantly slowed down passenger growth globally, including in the U.S., and we believe such growth and demand may be negatively impacted over the short to medium term. See “Risk Factors” below.
Increased lease penetration rate
Spare engines provide support for installed engines in the event of routine or other engine maintenance or unscheduled removal. The number of spare engines needed to service any fleet is determined by many factors. These factors include:
•the number and type of aircraft in an aircraft operator’s fleet;
•the geographic scope of such aircraft operator’s destinations;
•the time an engine is on-wing between removals;
•average shop visit time; and
•the number of spare engines an aircraft operator requires in order to ensure coverage for predicted and unscheduled removals.
We believe that commercial aircraft operators are increasingly considering their spare engines as significant capital assets, where operating leases may be more attractive than finance leases or ownership of spare engines. We believe that currently 35% of the spare engine market falls under the category of leased engines. Industry analysts have forecast that the percentage of leased engines is likely to increase over the next 15 years as engine leasing follows the growth of aircraft leasing. We believe this is due to the increasing cost of newer engines, the anticipated modernization of the worldwide aircraft fleet and the significant cost associated therewith, and the emergence of new niche-focused airlines which generally use leasing in order to obtain their capital assets.
ENGINE LEASING
As of December 31, 2021, the majority of our leases to air carriers, manufacturers and MROs were operating leases with the exception of certain failed sale-leaseback transactions classified as notes receivable under Accounting Standards Codification (“ASC”) 842. Under operating leases, we retain the potential benefit and assume the risk of the residual value of the equipment, in contrast to finance leases where the lessee has more of the potential benefits and risks of ownership. Operating leases allow commercial aircraft operators greater fleet and financial flexibility due to the relatively small initial capital outlay necessary to obtain use of the aircraft equipment, and the availability of short- and long-term leases to better meet their needs. Operating lease rates are generally higher than finance lease rates, in part because of the lessor retained residual value risk.
We describe all of our current leases as “triple-net” operating leases. A triple-net operating lease requires the lessee to make the full lease payment and pay any other expenses associated with the use of the engines, such as maintenance, casualty and liability insurance, sales or use taxes and personal property taxes. The leases contain detailed provisions specifying the lessees’ responsibility for engine damage, maintenance standards and the required condition of the engine upon return at the end of the lease. During the term of the lease, we require the lessee to maintain the engine in accordance with an approved maintenance program designed to meet applicable regulatory requirements in the jurisdictions in which the lessee operates.
We enter into both long-term and short-term leases which typically provide for monthly payment. Long-term leases typically have original lease terms in excess of one year. Characteristics of a long-term lease also include specified return conditions. Return conditions can be met by the customer through a maintenance overhaul in advance of asset return or a cash settlement at lease end resulting in maintenance revenue at that time. Maintenance reserves are often used for payment of maintenance overhauls in advance of asset returns. The cash settlement may, in some instances, be taken from maintenance reserves paid throughout the course of the lease. Short-term leases typically have an original lease term of less than one year. Short-term leases also include non-refundable, usage-based maintenance fees, which are billed at contractual rates and recognized as revenue over the term of the leases. Payment terms of our leases are predominately monthly in advance for rent and in arrears for usage. As of December 31, 2021 and 2020, 31% and 28%, respectively, of the Company’s leases by net book value were short-term leases.
We try to mitigate risk where possible. For example, we analyze the credit risk associated with a lessee before entering into any significant lease transaction. We manage our interest rate risk through maintaining a balance of fixed and floating rate debt which allows us to limit our exposure to interest rate movements while also allowing us to benefit from low short term interest rates. The company utilizes our credit facility as a warehouse facility to aggregate purchased assets. Generally, when the Company aggregates a critical mass of assets through revolver financing, we refinance the assets through the issuance long term fixed rate debt through the Asset Backed Security ("ABS") market. The maturity profile of the ABS term financings tend to better match the long life characteristics of our long life asset base. Furthermore, the Company also manages interest rate exposure through the purchasing of interest rate swaps which immunizes us from short term rate movements that would influence the cost of our credit facility borrowings. At December 31, 2021 the Company had $1.2 billion of fixed rate financing. Our credit analysis generally consists of
5

Table of Contents
evaluating the prospective lessee’s financial standing by utilizing financial statements and trade and/or banking references. In certain circumstances, we may require our lessees to provide additional credit support, such as a letter of credit or a guaranty from a bank or a third party or a security deposit. We also evaluate insurance and expropriation risk and evaluate and monitor the political and legal climate of the country in which a particular lessee is located in order to determine our ability to repossess our engines should the need arise. Despite these guidelines, we cannot give assurance that we will not experience collection problems or significant losses in the future. See “Risk Factors” below.
At the commencement of a lease, we may collect, in advance, a security deposit normally equal to at least one month’s lease payment. The security deposit is returned to the lessee after all lease return conditions have been met. Under the terms of some of our leases, during the term of the lease, the lessee pays amounts to us based on usage of the engine, which is referred to as maintenance reserves or use fees, which are designed to cover the expected future maintenance costs. For those leases in which the maintenance reserves are reimbursable to the lessee, maintenance reserves are collected and are reimbursed to the lessee when qualifying maintenance is performed. Under longer-term leases, to the extent that cumulative use fee billings are inadequate to fund expenditures required prior to return of the engine to us, the lessee is obligated to cover the shortfall.
During the lease period, our leases require that maintenance and inspection of the leased engines be performed at qualified maintenance facilities certified by the FAA or its foreign equivalent. In addition, when an engine becomes off-lease, it undergoes inspection to verify compliance with lease return conditions. Our management believes that our attention to our lessees and our emphasis on maintenance and inspection helps preserve residual values and generally helps us to recover our investment in our leased engines.
Upon termination of a lease, we will either enter into a new lease, sell or part out the related engines or airframe. The demand for aftermarket engines for either sale or lease may be affected by a number of variables, including:
•general market conditions;
•regulatory changes (particularly those imposing environmental, maintenance and other requirements on the operation of engines);
•changes in demand for air travel;
•fuel costs;
•changes in the supply and cost of aircraft equipment; and
•technological developments.
The value of a particular used engine or airframe varies greatly depending upon its condition, the maintenance services performed during the lease term and, as applicable, the number of hours or cycles remaining until the next major maintenance interval. If we are unable to lease or sell engines on favorable terms, our financial results and our ability to service debt may be adversely affected. See “Risk Factors” below.
The value of a particular model of engine is heavily dependent on the status of the types of aircraft on which it is installed. We believe values of engines tend to be stable as long as the host aircraft for the engines and the engines themselves are still being manufactured. Prices will also tend to remain stable and even rise after a host aircraft is no longer manufactured as long as there is sufficient demand for the host aircraft. However, the value of an engine begins to decline rapidly once the host aircraft is retired from service and/or parted out in significant numbers. Values of engines also may decline because of manufacturing defects that may surface subsequently.
As of December 31, 2021, our $1,991.4 million equipment held for operating lease portfolio and $115.5 million notes receivable represented 304 engines, twelve aircraft, one marine vessel and other leased parts and equipment. As of December 31, 2020, our $1,886.6 million equipment held for operating lease portfolio and $158.7 million notes receivable represented 291 engines, eight aircraft, one marine vessel and other leased parts and equipment.
6

Table of Contents
As of December 31, 2021 minimum future rentals under non-cancelable operating leases of these engines, related equipment and aircraft assets were as follows:

Year |  | (in thousands)
2022 |  | $ | 111,643 |
2023 |  | 46,447 |
2024 |  | 22,412 |
2025 |  | 9,306 |
2026 |  | 6,177 |
Thereafter |  | 27,179 |
|  | $ | 223,164 |

As of December 31, 2021, we had 76 lessees of commercial aircraft engines and related equipment, aircraft, and other leased parts and equipment in 40 countries. We believe the loss of any one customer would not have a significant long-term adverse effect on our business. We operate in a global market in which our engines are easily transferable among lessees located in many countries, which stabilizes demand and allows us to recover from the loss of a particular customer. As a result, we do not believe we are dependent on a single customer or a few customers, the loss of which would have a material adverse effect on our revenues. We provide other engine leasing related services such as engine storage, Part 145 maintenance and aircraft tear down services to our customers as well.
In 2011 we entered into an agreement with Mitsui & Co., Ltd. to participate in a joint venture formed as a Dublin-based Irish limited company — Willis Mitsui & Company Engine Support Limited (“WMES”) for the purpose of acquiring and leasing jet engines. Each partner holds a 50% interest in the joint venture. WMES owned a lease portfolio, inclusive of a note receivable, of 37 engines and five aircraft with a net book value of $292.5 million as of December 31, 2021. Our investment in the joint venture was $39.1 million as of December 31, 2021.
In 2014 we entered into an agreement with China Aviation Supplies Import & Export Corporation (“CASC”) to participate in a joint venture named CASC Willis Lease Finance Company Limited (“CASC Willis”), a joint venture based in Shanghai, China. Each partner holds a 50% interest in the joint venture. CASC Willis acquires and leases jet engines to Chinese airlines and concentrates on meeting the fast-growing demand for leased commercial aircraft engines and aviation assets in the People’s Republic of China. CASC Willis owned a lease portfolio of four engines with a net book value of $49.0 million as of December 31, 2021. Our investment in the joint venture was $16.9 million as of December 31, 2021.
AIRCRAFT LEASING
As of December 31, 2021, our operating lease portfolio and notes receivable included five A319-111 aircraft, four ATR 72-500 aircraft, one A320-233 aircraft, one A321-200 aircraft and one Boeing 737 with an aggregate net book value of $126.6 million.
Our aircraft leases are “triple-net” leases and the lessee is responsible for making the full lease payment and paying any other expenses associated with the use of the aircraft, such as maintenance, casualty and liability insurance, sales or use taxes and personal property taxes. In addition, the lessee is responsible for normal maintenance and repairs, engine and airframe overhauls, and compliance with return conditions of flight equipment on lease. Under the provisions of many leases, for certain engine and airframe overhauls, we reimburse the lessee for costs incurred up to but not exceeding maintenance reserves the lessee has paid to us. Maintenance reserves are designed to cover the expected maintenance costs. The lessee is also responsible for compliance with all applicable laws and regulations with respect to the aircraft. We require our lessees to comply with FAA requirements. We periodically inspect our leased aircraft. Generally, we require a deposit as security for the lessee’s performance of obligations under the lease and the condition of the aircraft upon return. In addition, the leases contain extensive provisions regarding our remedies and rights in the event of a default by the lessee and specific provisions regarding the condition of the aircraft upon return. The lessee is required to continue to make lease payments under all circumstances, including periods during which the aircraft is not in operation due to maintenance or grounding. We provide other aircraft leasing related services such as engine storage, Part 145 maintenance and aircraft tear down services to our customers as well.
SPARE PARTS SALES
The sale of spare parts is managed by the Company’s wholly owned subsidiary, Willis Aero. Willis Aero primarily engages in the sale of aircraft engine parts and materials through the acquisition or consignment from third parties or from the leasing portfolio. This business segment enables our Company to provide end-of-life solutions for the growing supply of surplus aircraft and engines, as well as manage the full lifecycle of our lease assets, enhance the returns on our engine portfolio and create incremental value for our shareholders. As of December 31, 2021, spare parts inventory had a carrying value of $51.0 million.
7

Table of Contents
ASSET MANAGEMENT
Willis Asset Management is a wholly owned subsidiary whose primary focus is the engine management and consulting business. Willis Asset Management had 434 engines, excluding WLFC engines, under management as of December 31, 2021.
COMPETITION
The markets for our products and services are very competitive, and we face competition from a number of sources. These competitors include aircraft engine and aircraft parts manufacturers, aircraft and aircraft engine lessors, airline and aircraft service and repair companies and aircraft and aircraft engine spare parts distributors. Many of our competitors have substantially greater resources than us. Those resources may include greater name recognition, larger product lines, complementary lines of business, greater financial, marketing, information systems and other resources. In addition, equipment manufacturers, aircraft maintenance providers, FAA certified repair facilities and other aviation aftermarket suppliers may vertically integrate into the markets that we serve, thereby significantly increasing industry competition and negatively impacting the Company. We can give no assurance that competitive pressures will not materially and adversely affect our business, financial condition or results of operations.
We compete primarily with aircraft engine manufacturers as well as with other aircraft engine lessors. It is common for commercial aircraft operators and MROs to utilize several leasing companies to meet their aircraft engine needs and to minimize reliance on a single leasing company.
Our competitors compete with us in many ways, including pricing, technical expertise, lease flexibility, engine availability, supply reliability, customer service and the quality and condition of engines. Many of our competitors have greater financial resources than we do, or are affiliates of larger companies. We emphasize the quality of our portfolio of aircraft engines, supply reliability and high level of customer service to our aircraft equipment lessees. We focus on ensuring adequate aircraft engine availability in high-demand locations, dedicate large portions of our organization to building relationships with lessees, maintain close day-to-day coordination with lessees and have developed an engine pooling arrangement that allows pool members quick access to available spare aircraft engines.
INSURANCE
In addition to requiring full indemnification under the terms of our leases, we require our lessees to carry the types of insurance customary in the air transportation industry, including comprehensive third-party liability insurance and physical damage and casualty insurance. We require that we be named as an additional insured on liability insurance with ourselves and our lenders normally identified as the loss payee for damage to the equipment on policies carried by lessees. We monitor compliance with the insurance provisions of the leases. We also carry contingent physical damage and third-party liability insurance as well as product liability insurance.
GOVERNMENT REGULATION
Our customers are subject to a high degree of regulation in the jurisdictions in which they operate. For example, the FAA regulates the manufacture, repair and operation of all aircraft operated in the United States and equivalent regulatory agencies in other countries, such as the European Aviation Safety Agency (“EASA”) in Europe, regulate aircraft operated in those countries. Such regulations also indirectly affect our business operations. All aircraft operated in the United States must be maintained under a continuous condition-monitoring program and must periodically undergo thorough inspection and maintenance. The inspection, maintenance and repair procedures for commercial aircraft are prescribed by regulatory authorities and can be performed only by certified repair facilities utilizing certified technicians. The FAA can suspend or revoke the authority of air carriers or their licensed personnel for failure to comply with regulations and ground aircraft if their airworthiness is in question.
While our leasing and reselling business is not regulated, the aircraft, engines and related parts that we purchase, lease and sell must be accompanied by documentation that enables the customer to comply with applicable regulatory requirements. Furthermore, before parts may be installed in an aircraft, they must meet certain standards of condition established by the FAA and/or the equivalent regulatory agencies in other countries. Specific regulations vary from country to country, although regulatory requirements in other countries are generally satisfied by compliance with FAA requirements. With respect to a particular engine or engine component, we utilize FAA and/or EASA certified repair stations to repair and certify engines and components to ensure marketability.
Governmental regulations where the related airframe is registered, and where the aircraft is operated, stipulate noise and emissions levels restrictions. For example, jurisdictions throughout the world have adopted noise regulations which require all aircraft to comply with Stage III noise requirements. In addition to the current Stage III compliance requirements, the United States and the International Civil Aviation Organization, or “ICAO,” have adopted a more stringent set of “Stage IV” standards for noise levels which apply to engines manufactured or certified from 2006 onward. At this time, the United States regulations do not require any phase-out of aircraft that qualify only for Stage III compliance, but the European Union has established a framework for the imposition of operating limitations on non-Stage IV aircraft.
8

Table of Contents
As of December 31, 2021, most of the engines in our lease portfolio are Stage IV engines and are generally suitable for use on one or more commonly used aircraft.
We believe that the aviation industry will be subject to continued regulatory activity. Additionally, increased oversight will continue to originate from the quality assurance departments of airline operators. We have been able to meet all such requirements to date, and are well positioned to meet any additional requirements that may be imposed. We cannot give assurance, however, that new, more stringent government regulations will not be adopted in the future or that any such new regulations, if enacted, would not have a material adverse impact on us.
FINANCING/SOURCE OF FUNDS
We, directly or through our Willis Engine Structured Trust III, IV, V and VI (“WEST III”, “WEST IV”, “WEST V” and “WEST VI”) asset-backed securitizations (“ABS”), typically acquire engines with a combination of equity capital and funds borrowed from financial institutions. In order to facilitate financing and leasing of engines, each engine is generally owned through a statutory or common law trust that is wholly owned by us or our subsidiaries. We usually borrow up to 85% of an engine purchase price. Substantially all of our assets secure our related indebtedness. We typically acquire engines from airlines, engine manufacturers or from other lessors. From time to time, we selectively acquire engines prior to a firm commitment to lease or sell the engine, depending on the price of the engine and market demand with the expectation that we can lease or sell such engines in the future. Additionally, for discrete financing purposes, we will enter into bi-lateral and preferred financing arrangements from time to time.
EMPLOYEES
As of December 31, 2021, we had 243 total employees, of which 229 are full-time employees (excluding consultants), in sales and marketing, technical service and administration. None of our employees are covered by a collective bargaining agreement and we believe our employee relations are satisfactory.
ITEM 1A. RISK FACTORS
The following risk factors and other information included in this Annual Report should be carefully considered. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations. If any of the following risks occur, our business, financial condition, operating results, and cash flows could be materially and adversely affected.
RISKS RELATING TO OUR BUSINESS
Risks Related to Our Operations
Our business has been and will continue to be negatively impacted by the COVID-19 pandemic, and COVID-19 related impacts have had a material adverse effect on the Company’s business, operating results and financial condition.
The ongoing COVID-19 pandemic has resulted in a global slowdown of economic activity, particularly in the airline industry, and its impacts are expected to continue to persist and result in reduced demand for air travel for the foreseeable future. We have experienced, and expect to continue to experience, diminished demand for leases of our engines and aircraft as a result of the COVID-19 pandemic. These COVID-19 pandemic-related impacts have, in the aggregate, had a material adverse impact on our business, results of operations and financial condition. For example, for the year ended December 31, 2021, our lease rent revenue decreased by 5.6% and our spare parts and equipment sales declined by 6.5% when compared to 2020, a year in which we experienced sharp declines in revenues due to the COVID-19 pandemic. We also agreed to rent concessions, which resulted in a total reduction of rent revenues of $0.5 million for the year ended December 31, 2021 as a result of impacts from COVID-19. We are unable to predict the extent or duration of these impacts as they will depend on future developments, which are highly uncertain and cannot be predicted at this time, such as the incidence and extent of outbreaks associated with new variants of the virus, the availability and effectiveness of treatments for COVID-19, such as vaccines, and the timing and extent that passenger airline travel will increase and recover to levels before the pandemic. Challenges for our Company include possible declines in the values of aircraft, engines and related aircraft equipment in our portfolio, lower market rents for engines and aircraft offered for lease by us, and continued and further reductions in demand by potential and existing customers for additional or replacement engines offered by us. In addition, the significant cash flow issues faced by airlines, including some of our customers, may cause some of our customers to be unable to timely meet their lease obligations to us or go out of business. Any nonpayment or late payment of lease payments by a significant lessee or combination of lessees could in turn impose limits on our ability to fund our ongoing operations. Even after the COVID-19 pandemic has subsided, we may experience materially adverse impacts to our business due to a lingering economic recession or otherwise. Additionally, concerns over the economic impact of COVID-19 have caused extreme volatility in financial and other capital markets which has and may continue to adversely impact the market value of our common stock and may adversely affect our ability to access capital markets.
We are affected by the risks faced by commercial aircraft operators and MROs because they are our customers.
9

Table of Contents
We operate as a supplier of engines, aircraft and related parts (“aviation equipment”) to commercial aircraft operators and MROs and are indirectly impacted by all the risks facing commercial aircraft operators and MROs today. The ability of each lessee to perform its obligations under the relevant lease and the demand of companies to purchase aviation equipment will depend primarily on the lessee’s (or in the case of parts and materials, the purchaser’s) financial condition and cash flow. This may be affected by factors beyond our control, including:
•general economic conditions in the countries in which our customers operate, including changes in gross domestic product;
•demand for air travel and air cargo shipments;
•increased competition;
•the availability of government support, which may be in the form of subsidies, loans (including export/import financing), guarantees, equity investments or otherwise;
•changes in interest rates and the availability and terms of credit available to commercial aircraft operators including covenants in financings, terms imposed by credit card issuers, collateral posting requirements contained in fuel hedging contracts and the ability of airlines and MROs to make or refinance principal payments as they come due;
•geopolitical and other events, including those arising from war, such as the escalating conflict between Russia and Ukraine, concerns about security, terrorism, war, pandemics and similar public health concerns and political instability;
•changing political conditions, including risk of rising protectionism and imposition of new trade barriers;
•inclement weather and natural disasters;
•environmental compliance and other regulatory costs, including noise regulations, emissions regulations, climate change initiatives, and aircraft age limitations;
•cyber risk, including information hacking, viruses and malware;
•labor contracts, labor costs and strikes or stoppages at commercial aircraft operators;
•operating costs, including the price and availability of fuel, maintenance costs, and insurance costs and coverages;
•technological developments;
•airport access and air traffic control infrastructure constraints;
•industry capacity, utilization and general market conditions; and
•market prices for aviation equipment.
To the extent that our customers are negatively affected by these risk factors, we may experience:
•a decrease in demand for some types of aviation equipment in our portfolio;
•greater credit risks from our customers, and a higher incidence of lessee defaults and corresponding repossessions;
•an inability to quickly lease engines and aircraft on commercially acceptable terms when these become available through our purchase commitments and regular lease terminations;
•shorter lease terms, which may increase our expenses and reduce our utilization rates; and
•fewer opportunities to manage aviation equipment for other companies, and/or less profitable terms.
Our operating results vary and comparisons to results for preceding periods may not be meaningful.
Due to a number of factors, including the risks described in this ITEM 1A, our operating results may fluctuate. These fluctuations may also be caused by:
•the timing and number of purchases and sales of engines or aircraft;
10

Table of Contents
•the timing and amount of maintenance reserve revenues recorded resulting from the termination of long term leases, for which significant amounts of maintenance reserves may have accumulated;
•the termination or announced termination of production of particular aircraft and engine types;
•the retirement or announced retirement of particular aircraft models by aircraft operators;
•the operating history of any particular engine, aircraft or engine or aircraft model;
•the length of our operating leases; and
•the timing of necessary overhauls of engines and aircraft.
These risks may reduce our utilization rates, lease margins, maintenance reserve revenues and proceeds from engine and aircraft sales, and result in higher legal, technical, maintenance, storage and insurance costs related to repossession and the cost of engines being off lease. As a result of the foregoing and other factors, the availability of engines and aircraft for lease or sale periodically experiences cycles of oversupply and undersupply of given engine or aircraft models. The incidence of an oversupply of engines or aircraft may produce substantial decreases in lease rates and the appraised and resale value of aviation equipment and may increase the time and costs incurred to lease or sell engines.
We anticipate that fluctuations from period to period will continue in the future. As a result, we believe that comparisons to results for preceding periods may not be meaningful and that results of prior periods should not be relied upon as an indication of our future performance.
We and our customers operate in a highly regulated industry and changes in laws or regulations may adversely affect our ability to lease or sell our engines or aircraft.
Licenses and consents
We and our customers operate in a highly regulated industry. A number of our leases require specific governmental or regulatory licenses, consents or approvals. These include consents for certain payments under the leases and for the export, import or re-export of our engines or aircraft. Consents needed in connection with future leasing or sale of our engines or aircraft may not be received timely or have economically feasible terms. Any of these events could adversely affect our ability to lease or sell engines or aircraft.
Civil aviation regulation
Users of engines and aircraft are subject to general civil aviation authorities, including the FAA and the EASA, who regulate the maintenance of engines and issue airworthiness directives. Airworthiness directives typically set forth special maintenance actions or modifications to certain engine and aircraft types or series of specific engines that must be implemented for the engine or aircraft to remain in service. Also, airworthiness directives may require the lessee to make more frequent inspections of an engine, aircraft or particular engine parts. Each lessee of an engine or aircraft generally is responsible for complying with all airworthiness directives. However, if the engine or aircraft is off lease, we may be forced to bear the cost of compliance with such airworthiness directives, and if the engine or aircraft is leased, subject to the terms of the lease, if any, we may be forced to share the cost of compliance.
Environmental regulation
Governmental regulations of noise and emissions levels may be applicable where the related airframe is registered, and where the aircraft is operated. For example, jurisdictions throughout the world have adopted noise regulations which require all aircraft to comply with Stage III noise requirements. In addition to the current Stage III compliance requirements, the United States and the ICAO have adopted a more stringent set of “Stage IV” standards for noise levels which apply to engines manufactured or certified from 2006 onward. At this time, the United States regulations do not require any phase-out of aircraft that qualify only for Stage III compliance, but the European Union has established a framework for the imposition of operating limitations on non-Stage IV aircraft. These regulations could limit the economic life of our engines and aircraft or reduce their value, could limit our ability to lease or sell the non-compliant engines or aircraft or, if modifications are permitted, require us to make significant additional investments in the engines or aircraft to make them compliant.
The United States and other jurisdictions are imposing more stringent limits on the emission of nitrogen oxide, carbon monoxide and carbon dioxide emissions from engines, consistent with ICAO standards. These limits generally apply only to engines manufactured after 1999. In 2005, the European Union launched an Emissions Trading System limiting greenhouse gas emissions by various industries and persons, including aircraft operators. Concerns over global warming, climate change or other environmental issues could result in more stringent limitations on the operation of older, non-compliant engines and aircraft.
11

Table of Contents
Failure to comply with anti-corruption laws, trade controls, economic sanctions and similar laws and regulations could subject us to penalties and other adverse consequences.
Our operations are subject to U.S. and foreign anti-corruption and trade control laws and regulations, such as the Foreign Corrupt Practices Act (“FCPA”) and other anti-bribery laws in other jurisdictions, including the UK Bribery Act 2010, export controls and economic sanctions programs, including those administered by the U.S. Department of State, U.S. Treasury Department’s Office of Foreign Assets Control (“OFAC”) and the Bureau of Industry and Security (“BIS”) of the Department of Commerce.
As part of our business, we may deal with state-owned business enterprises, the employees of which are considered foreign officials for purposes of the FCPA’s prohibition on providing anything of value to foreign officials for the purposes of obtaining or retaining business or securing any improper business advantage. In addition, we must comply with various laws and regulations relating to the export of products and technology from the U.S. and other countries having jurisdiction over our operations. Obtaining the necessary export license or other authorization for a particular lease may be time-consuming and may result in the delay or loss of leasing opportunities.
We are also subject to certain economic and trade sanctions programs that are administered by OFAC, which prohibit or restrict transactions to or from or dealings with specified countries, their governments, and in certain circumstances, their nationals, and with individuals and entities that are specially-designated nationals of those countries. It is possible that, without our knowledge, engines or other equipment that we export end up in the possession of individuals or entities that have been designated by OFAC or are located in a country subject to sanctions.
We have established policies and procedures designed to assist with our compliance with these laws and regulations. However, maintaining and enhancing our policies and procedures in response to changing laws and regulations or business circumstances can be costly and place restrictions on our operations, and we cannot guarantee that the precautions we take will prevent violations of anti-corruption and trade control laws and regulations. Violations of these regulations are punishable by civil penalties, including fines, denial of export privileges, injunctions, asset seizures, debarment from government contracts and revocations or restrictions of licenses, as well as criminal fines and imprisonment. In addition, the costs associated with responding to a government investigation and remediating any violations can be substantial. Accordingly, violations could adversely affect, among other things, our reputation, business, financial condition, results of operations and cash flows.
Our aircraft, engines or parts could cause bodily injury or property damage, exposing us to liability claims.
We are exposed to potential liability claims if the use of our aircraft, engines or parts is alleged to have caused bodily injury or property damage. Our leases require our lessees to indemnify us against these claims and to carry insurance customary in the air transportation industry, including liability, property damage and hull all risks insurance on our engines and on our aircraft at agreed upon levels. We can give no assurance that one or more catastrophic events will not exceed insurance coverage limits or that lessees’ insurance will cover all claims that may be asserted against us. Any insurance coverage deficiency or default by lessees under their indemnification or insurance obligations may reduce our recovery of losses upon an event of loss.
Our financial reporting for lease revenue may be adversely impacted by any future change to lease accounting, as well as any future change to current tax laws or accounting principles pertaining to operating or other lease financing.
Our lessees enjoy favorable accounting and tax treatment generally by using operating leases. Changes in tax laws or accounting principles that make operating leases less attractive to our lessees could have a material adverse effect on demand for our leases and on our business.
Our consolidated financial statements are prepared in accordance with Generally Accepted Accounting Principles (“GAAP”). If there are future changes in GAAP with regard to how we and our customers must account for leases, it could change the way we and our customers conduct our businesses and, therefore, could have the potential to have an adverse effect on our business.
We may not be adequately covered by insurance.
By virtue of holding title to engines and aircraft, parties suffering damage as a result of malfunction of an engine or aircraft may assert that lessors are strictly liable for losses resulting from the operation of the engines and aircraft. Such liability may be asserted even under circumstances in which the lessor is not directly controlling the operation of the relevant aircraft. While we maintain contingent insurance covering losses not covered by our lessees’ insurance, such coverage may not be available in circumstances where the lessees’ insurance coverage is insufficient. In addition, if a lessee is not obligated to maintain sufficient insurance, we may incur the costs of additional insurance coverage during the related lease. We are required under certain of our debt facilities to obtain political risk insurance for leases to lessees in specified jurisdictions. We can give no assurance that such insurance will be available at commercially reasonable rates, if at all.
12

Table of Contents
We and our lenders generally are named as additional insureds on liability insurance policies carried by our lessees and are usually the loss payees for damage to our engines and aircraft. However, an uninsured or partially insured claim, or a claim for which third-party indemnification is not available, could have a material adverse effect upon us. A loss of an aircraft where we lease the airframe, an engine or other leased equipment could result in significant monetary claims for which there may not be sufficient insurance coverage.
Natural disasters, public health emergencies, such as the outbreak of the COVID-19 virus, and other business disruptions could cause significant harm to our customer base, which may materially adversely affect our business, results of operations, and financial condition.
Our business has been adversely impacted by the effects of the COVID-19 pandemic, which has significantly impacted the airline industry. A number of countries have imposed travel restrictions and mandatory quarantine periods causing significant economic disruption, a reduction in commercial airline traffic and flight cancellations. The continuing spread of the virus to other countries and regions may result in the imposition of additional restrictions, increased flight cancellations and greater reluctance to travel, all of which may lead to greater economic disruption and a broader adverse impact on air travel and the aviation industry, resulting in lower demand for leases of our aircraft and engines and possibly impacting the ability of our lessees to satisfy their payment obligations to us. The International Air Transport Association recently estimated that the airline industry has lost over $47.7 billion in sales due to reductions in air travel and flight cancellations as a result of the coronavirus.
Our U.S. and international operations and warehouse facilities are also susceptible to losses and interruptions caused by floods, hurricanes, earthquakes, typhoons, and similar natural disasters, as well as power outages, telecommunications failures, and similar events.
A decrease in air travel, lack of demand for air travel or downturn in the aviation industry caused by public health emergencies or natural disasters could result in lower utilization of our engine and aircraft assets, which could in turn materially and adversely affect our business, financial condition and results of operations. In addition, the occurrence of natural disasters and health emergency or similar events in any of the regions in which we operate could disrupt the operations of our business.
Risks Related to Our Aviation Assets
The value and lease rates of our engines and aircraft could decline.
The value of a particular model of engine depends heavily on the types of aircraft on which it may be installed and the supply of available engines. We believe values of engines tend to be relatively stable so long as there is sufficient demand for the host aircraft, and the demand for aircraft depend on numerous factors, including age, technology, and customer preference. We believe the value of an engine begins to decline rapidly once the host aircraft begins to be retired from service and/or used for spare parts in significant numbers. Certain types of engines and aircraft may be used in significant numbers by commercial aircraft operators that are currently experiencing financial difficulties. If such operators were to go into liquidation or similar proceedings, the resulting over-supply of engines and aircraft from these operators could have an adverse effect on the demand for the affected engine and aircraft types and the values of such aviation equipment.
Upon termination of a lease, we may be unable to enter into new leases or sell the affected aviation equipment on acceptable terms.
We directly or indirectly own the aviation equipment that we lease to customers and bear the risk of not recovering our entire investment through leasing and selling the applicable aircraft and engines. Upon termination of a lease, we seek to enter a new lease or to sell or part-out the applicable aviation equipment. We also selectively sell aviation equipment on an opportunistic basis. We cannot give assurance that we will be able to find, in a timely manner, a lessee or a buyer for aviation equipment coming off-lease or for the associated parts. If we do find a lessee, we may not be able to obtain satisfactory lease rates and terms (including maintenance and redelivery conditions) or rates and terms comparable to our current leases, and we can give no assurance that the creditworthiness of any future lessee will be equal to or better than that of the existing lessees of our engines. Leases with terms of 12 months or less, including assets off-lease, which as of December 31, 2021 constituted approximately 68% of our assets, may frequently need to be remarketed. We face the risk that we may not be able to keep our assets on lease consistently.
Although leases of engines account for most of our revenue, leases of aircraft expose us to greater risks than leases of engines and these risks could materially impact our financial condition and results of operations.
We are exposed to a number of risks related to our aircraft leasing activities. For example, leases of aircraft subject us to greater maintenance risks because the maintenance fees we charge may not cover aircraft maintenance costs that may be higher than anticipated. In addition, we face greater credit risk from lessees in this business as the assets that we lease to them tend to have higher net book values than individual engines. Moreover, aircraft technology is constantly improving and, as a result, aircraft of a particular
13

Table of Contents
model and type tend to become obsolete and less in demand over time, when newer, more advanced and efficient aircraft become available. Consequently, we may experience difficulty in leasing or selling aircraft. Any of these risks could have a material adverse impact on our financial condition and results of operations.
We carry the risk of maintenance for our leased assets. Our maintenance reserves may be inadequate or lessees may default on their obligations to perform maintenance, which could increase our expenses.
Under most of our engine and aircraft leases, the lessee makes monthly maintenance reserve payments to us based on the asset’s usage and management’s estimate of maintenance costs. A certain level of maintenance reserve payments on the WEST III, WEST IV, WEST V and WEST VI engines are held in related engine reserve restricted cash accounts. Generally, the lessee under long term leases is responsible for all scheduled maintenance costs, even if they exceed the amounts of maintenance reserves paid. As of December 31, 2021, 99 of our leases comprising approximately 31% of the net book value of our on-lease assets do not provide for any monthly maintenance reserve payments to be made by lessees, and we can give no assurance that future leases of our engines or aircraft will require maintenance reserves. In some cases, including engine and aircraft repossessions, we may decide to pay for refurbishments or repairs if the accumulated use fees are inadequate.
We can give no assurance that our operating cash flows and available liquidity reserves, including the amounts held in the reserve restricted cash accounts, will be sufficient to fund necessary engine and aircraft maintenance. Actual maintenance reserve payments by lessees and other cash that we receive may be significantly less than projected as a result of numerous factors, including defaults by lessees. Furthermore, we can provide no assurance that lessees will meet their obligations to make maintenance reserve payments or perform required scheduled maintenance or, to the extent that maintenance reserve payments are insufficient, to cover the cost of refurbishments or repairs.
Failures by lessees to meet their maintenance and recordkeeping obligations under our leases could adversely affect the value of our leased engines and aircraft and our ability to lease the engines and aircraft in a timely manner following termination of the leases.
The value and income producing potential of an engine or aircraft depends heavily on it being maintained in accordance with an approved maintenance system and complying with all applicable governmental directives and manufacturer requirements. In addition, for an engine or aircraft to be available for service, all records, logs, licenses and documentation relating to maintenance and operations of the engine or aircraft must be maintained in accordance with governmental and manufacturer specifications.
Our leases make the lessees primarily responsible for maintaining the engines or aircraft, keeping related records and complying with governmental directives and manufacturer requirements. Over time, certain lessees have experienced, and may experience in the future, difficulties in meeting their maintenance and recordkeeping obligations as specified by the terms of our leases.
Our ability to determine the condition of the engines or aircraft and whether the lessees are properly maintaining our assets is generally limited to the lessees’ reporting of monthly usage and any maintenance performed, confirmed by periodic inspections performed by us and third parties. A lessee’s failure to meet its maintenance or recordkeeping obligations under a lease could result in:
•a grounding of the related engine or aircraft;
•a repossession that would likely cause us to incur additional and potentially substantial expenditures in restoring the engine or aircraft to an acceptable maintenance condition;
•a need to incur additional costs and devote resources to recreate the records prior to the sale or lease of the engine or aircraft;
•loss of lease revenue while we perform refurbishments or repairs and recreate records; and
•a lower lease rate and/or shorter lease term under a new lease entered into by us following repossession of the engine or aircraft.
Any of these events may adversely affect the value of the engine or aircraft, unless and until remedied, and reduce our revenues and increase our expenses. If aviation equipment is damaged during a lease and we are unable to recover from the lessee or though insurance, we may incur a loss.
The advent of superior engine and aircraft technology and higher production levels could cause our existing portfolio of aviation equipment to become outdated and therefore less desirable.
As manufacturers introduce technological innovations and new types of engines and aircraft, certain engines and aircraft in our existing portfolio of aviation equipment may become less desirable to potential lessees or purchasers. This next generation of engines
14

Table of Contents
and aircraft is expected to deliver improved fuel consumption and reduced noise and emissions with lower operating costs compared to current-technology aircraft.
The introduction of new models of engines and aircraft and the potential resulting overcapacity in supply, could adversely affect the residual values and the lease rates for our engines and aircraft, our ability to lease or sell our engines and aircraft on favorable terms, or at all, or result in us recording future impairment charges.
Our customers face intense competition and some carriers are in troubled financial condition.
As a general matter, commercial aircraft operators with weak capital structures are more likely than well-capitalized operators to seek operating leases, and, at any point in time, investors should expect a varying number of lessees and sub-lessees to experience payment difficulties. As a result of such commercial aircraft operators’ weak financial condition and lack of liquidity, a portion of lessees over time may be significantly in arrears in their rental or maintenance payments and may default on their lease obligations. Given the size of our portfolio of engines and aircraft, we expect that from time to time some lessees will be slow in making, or will fail to make, their payments in full under their leases. As of December 31, 2021, we had an aggregate of approximately $6.8 million in lease rent and $4.1 million in maintenance reserve payments more than 30 days past due as compared to $4.6 million in lease rent and $1.9 million in maintenance reserve payments more than 30 days past due as of December 31, 2020. Our inability to collect receivables or to repossess engines, aircraft or other leased equipment in the event of a default by a lessee could have a material adverse effect on us.
We may not correctly assess the credit risk of each lessee or may not be in a position to charge risk-adjusted lease rates, and lessees may not be able to continue to perform their financial and other obligations under our leases in the future. A delayed, reduced or missed rental payment from a lessee may decrease our revenues and cash flow and may adversely affect our ability to make payments on our indebtedness or to comply with financial covenants in our loan documents (see “Our Financing Facilities Impose Restrictions on our Operations”). While we typically experience some level of delinquency under our leases, default levels may increase over time, particularly as our portfolio of engines and aircraft ages and if economic conditions deteriorate.
Various airlines have filed for bankruptcy in the United States and in foreign jurisdictions, with some seeking to restructure their operations and others ceasing operations entirely. In the case of airlines that are restructuring, such airlines often reduce their flights or eliminate the use of certain types of aircraft and the related engine types. Applicable bankruptcy laws often allow these airlines to terminate leases early and to return our engines or aircraft without meeting the contractual return conditions. In that case, we may not be paid the full amount, or any part, of our claims for these lease terminations. Alternatively, we might negotiate agreements with those airlines under which the airline continues to lease the engine or aircraft, but under modified lease terms. If requests for payment restructuring or rescheduling are made and granted, reduced or deferred rental payments may be payable over all or some part of the remaining term of the lease, although the terms of any revised payment schedules may be unfavorable and such payments may not be made. In the case of an airline which has ceased operations entirely, in addition to the risk of nonpayment, we face the enhanced risk of deterioration or total loss of an engine or aircraft while it is under uncertain custody and control. In that case, we may be required to take legal action to secure the return of the engine or aircraft and its records or, alternatively, to negotiate a settlement under which we can immediately recover the engine or aircraft and its records in exchange for waiving subsequent legal claims.
We may not be able to repossess an engine or aircraft when the lessee defaults, and even if we are able to repossess the engine or aircraft, we may have to expend significant funds in the repossession, remarketing and leasing of the asset.
When a lessee defaults and such default is not cured in a timely manner, we typically seek to terminate the lease and repossess the engine or aircraft. If a defaulting lessee contests the termination and repossession or is under court protection, enforcement of our rights under the lease may be difficult, expensive and time-consuming. We may not realize any practical benefits from our legal rights and we may need to obtain consents to export the engine or aircraft. As a result, the relevant asset may be off-lease or not producing revenue for a prolonged period. In addition, we will incur direct costs associated with repossessing our engine or aircraft. These costs may include legal and similar costs, the direct costs of transporting, storing and insuring the engine or aircraft, and costs associated with necessary maintenance and recordkeeping to make the asset available for lease or sale. During this time, we will realize no revenue from the leased engine or aircraft, and we will continue to be obligated to pay any debt financing applicable to the asset. If an engine is installed on an airframe, the airframe may be owned by an aircraft lessor or other third party. Our ability to recover engines installed on airframes may depend on the cooperation of the airframe owner.
Risks Related to Our Orders of New Engines
We have committed to purchase new engines in 2022 with an aggregate value of up to $127.7 million. Our ability to lease these assets on favorable terms, if at all, may be adversely affected by risks to the commercial airline industry generally. If we are unable to obtain commitments for the remaining deliveries or otherwise satisfy our contractual obligations to the engine manufacturers, we will be subject to several potential risks, including:
15

Table of Contents
•forfeiting advance deposits, as well as incurring certain significant costs related to these commitments such as contractual damages and legal, accounting and financial advisory expenses;
•defaulting on any future lease commitments we may have entered into with respect to these engines, which could result in monetary damages and strained relationships with lessees;
•failing to realize the benefits of purchasing and leasing the engines; and
•risking harm to our business reputation, which would make it more difficult to purchase and lease engines in the future on agreeable terms, if at all.
Risks Relating to Our Capital Structure
Our future growth and profitability will depend on our ability to acquire aviation equipment and make other strategic investments. As a result, our inability to obtain sufficient capital to finance these acquisitions would constrain our ability to grow our portfolio and to increase our revenues.
Our business is capital intensive and highly leveraged. Accordingly, our ability to successfully execute our business strategy and maintain our operations depends on the availability and cost of debt and equity capital. Additionally, our ability to borrow against our portfolio of engines, aircraft and strategic investments is dependent, in part, on the appraised value of such engines, aircraft and investments. If the appraised value of our portfolio declines, we may be required to either refrain from borrowings or reduce the principal outstanding under certain of our debt facilities.
A significant increase in our cost to acquire engines and aircraft, or in our cost of strategic investments, due to increased interest expense or cost of capital will make it more difficult for us to make accretive acquisitions. The disruptions may also adversely affect our ability to raise additional capital to fund our continued growth. Although we have adequate debt commitments from our lenders, assuming they are willing and able to meet their contractual obligation to lend to us, market disruptions may adversely affect our ability to raise additional equity capital to fund future growth, requiring us to rely on internally generated funds. This would lower our rate of capital investment.
We can give no assurance that the capital we need will be available to us on favorable terms, or at all. Our inability to obtain sufficient capital, or to renew or expand our credit facilities, could result in increased funding costs and would limit our ability to:
•meet the terms and maturities of our existing and future debt facilities;
•add new equipment to our portfolio;
•fund our working capital needs and maintain adequate liquidity; and
•finance other growth initiatives.
Our financing facilities impose restrictions on our operations.
We have, and expect to continue to have, various credit and financing arrangements with third parties. These financing arrangements are secured by all or substantially all of our assets. Our existing credit and financing arrangements require us to meet certain financial condition tests. Our revolving credit facility prohibits our purchasing or redeeming stock, or declaring or paying dividends on shares of any class or series of our common or preferred stock if an event of default under such facility has or will occur and remains uncured. The agreements governing our debt, including the issuance of notes by WEST III, WEST IV, WEST V and WEST VI, also include restrictive financial covenants. A breach of those and other covenants could, unless waived or amended by our creditors, result in a cross-default to other indebtedness and an acceleration of all or substantially all of our debt. We have obtained such waivers and amendments to our financing agreements in the past, but we cannot provide any assurance that we will receive such waivers or amendments in the future if we require them. If our outstanding debt is accelerated at any time, we likely would have little or no cash or other assets available after payment of our debts, which could cause the value or market price of our outstanding equity securities to decline significantly and we would have few, if any, assets available for distributions to our equity holders in liquidation.
We are exposed to interest rate risk on our leases, which could have a negative impact on our margins.
We are affected by fluctuations in interest rates. Our lease rates are generally fixed, and a portion of our debt bears variable rate interest based on one-month London Interbank Offered Rate (“LIBOR”), so changes in interest rates directly affect our lease margins. From time to time, we seek to reduce our interest rate volatility and uncertainty through hedging with interest rate derivative contracts with respect to a portion of our debt. Our lease margins, as well as our earnings and cash flows may be adversely affected by increases in interest rates. To the extent we do not have hedges or other derivatives in place or if our hedges or other derivatives do not mitigate
16

Table of Contents
our interest rate exposure from an economic standpoint, we would be adversely affected by increasing interest rates. As reported by Intercontinental Exchange, the one-month LIBOR was approximately 0.10% and 0.14% on December 31, 2021 and 2020, respectively.
Changes in the method of determining LIBOR, or the replacement of LIBOR with an alternative reference rate, may adversely affect interest rates on our current or future indebtedness and may otherwise adversely affect our financial condition and results of operations.
Certain of our indebtedness is made at variable interest rates that use LIBOR (or metrics derived from or related to LIBOR), as a benchmark for establishing the interest rate. On July 27, 2017, the United Kingdom’s Financial Conduct Authority announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021. Subsequently, the United Kingdom’s Financial Conduct Authority announced the date has been moved to June 2023. These reforms may cause LIBOR to cease to exist, new methods of calculating LIBOR to be established, or alternative reference rates to be established. The potential consequences cannot be fully predicted and could have an adverse impact on the market value for or value of LIBOR-linked securities, loans, and other financial obligations or extensions of credit held by or due to us. Changes in market interest rates may influence our financing costs, returns on financial investments and the valuation of derivative contracts and could reduce our earnings and cash flows. In addition, any transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that rely on LIBOR, reductions in the value of certain instruments or the effectiveness of related transactions such as hedges, increased borrowing costs, uncertainty under applicable documentation, or difficult and costly consent processes. This could materially and adversely affect our results of operations, cash flows, and liquidity. We cannot predict the effect of the potential changes to LIBOR or the establishment and use of alternative rates or benchmarks.
In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting”, which provides temporary optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Among other things, for all types of hedging relationships, the guidance allows an entity to change the reference rate and other critical terms related to reference rate reform without having to remeasure the value or reassess a previous accounting determination. The amendments in this guidance should be applied on a prospective basis and, for companies with a fiscal year ending December 31, are effective from January 1, 2020 through December 31, 2022. The Company adopted this guidance effective January 1, 2020. When the transition occurs, the Company expects to apply this expedient to its existing debt instruments and interest rate swaps that reference LIBOR, and to any other new transactions that reference LIBOR or another reference rate that is discontinued, through December 31, 2022. The adoption of this ASU did not impact the Company’s consolidated financial statements.
An increase in interest rates or in our borrowing margin would increase the cost of servicing our debt and could reduce our profitability.
A significant portion of our outstanding debt bears interest at floating rates. As a result, to the extent we have not hedged against rising interest rates, an increase in the applicable benchmark interest rates would increase our cost of servicing our debt and could materially and adversely affect our results of operations, financial condition, liquidity and cash flows.
In addition, we regularly refinance our indebtedness. If interest rates or our borrowing margins increase between the time an existing financing arrangement was consummated and the time such financing arrangement is refinanced, the cost of servicing our debt would increase and our results of operations, financial condition, liquidity and cash flows could be materially and adversely affected.
We have risks in managing our portfolio of engines to meet customer needs.
The relatively long life cycles of aircraft and jet engines can be shortened by world events, government regulation or customer preferences. We seek to manage these risks by trying to anticipate demand for particular engine and aircraft types, maintaining a portfolio mix of engines that we believe is diversified and that will have long-term value and will be sought by lessees in the global market for jet engines, and by selling engines and aircraft that we expect will experience obsolescence or declining usefulness in the foreseeable future.
The WEST III structured facility includes restrictions and limitations on the sale of assets in that facility including, with respect to pro forma limitations on assets subject to part-out agreements, a 15% limitation on sales prior to August 2019 and 20% thereafter, and also, in certain situations, with respect to a 25% limit on assets sold below a specific dollar threshold.
The WEST IV structured facility includes restrictions and limitations on the sale of assets in that facility including, with respect to pro forma limitations on assets subject to part-out agreements, a 15% limitation on sales prior to August 2020 and 20% thereafter, and also, in certain situations, with respect to a 25% limit on assets sold below a specific dollar threshold.
17

Table of Contents
The WEST V structured facility includes restrictions and limitations on the sale of assets in that facility including, with respect to pro forma limitations on assets subject to part-out agreements, a 15% limitation on sales prior to March 2022 and a 20% limitation on sales prior to March 2024, and also, in certain situations, with respect to a 25% limit on assets sold below a specific dollar threshold.
The WEST VI structured facility includes restrictions and limitations on the sale of assets in that facility including, with respect to pro forma limitations on assets subject to part-out agreements, a 15% limitation on sales prior to May 2023 and a 20% limitation on sales prior to May 2025, and also, in certain situations, with respect to a 10% limit on assets sold below a specific dollar threshold per calendar year.
Our inability to maintain sufficient liquidity could limit our operational flexibility and also impact our ability to make payments on our obligations as they come due.
In addition to being capital intensive and highly leveraged, our business also requires that we maintain sufficient liquidity to enable us to contribute the non-financed portion of engine and aircraft purchases as well as to service our payment obligations to our creditors as they become due, despite the fact that the timing and amounts of payments under our leases do not match the timing under our debt service obligations. Our restricted cash is unavailable for general corporate purposes. Accordingly, our ability to successfully execute our business strategy and maintain our operations depends on our ability to continue to maintain sufficient liquidity, cash and available credit under our credit facilities. Our liquidity could be adversely impacted if we are subjected to one or more of the following: a significant decline in lease revenues, a material increase in interest expense that is not matched by a corresponding increase in lease rates, a significant increase in operating expenses, or a reduction in our available credit under our credit facilities. If we do not maintain sufficient liquidity, our ability to meet our payment obligations to creditors or to borrow additional funds could become impaired as could our ability to make dividend payments or other distributions to our equity holders. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Financial Position, Liquidity and Capital Resources.”
Inflation may adversely affect us by increasing costs beyond what we can recover through price increases.
Recently, inflation has increased throughout the U.S. economy. Inflation can adversely affect us by increasing the costs of labor and other costs as well as by reducing demand for air travel. In addition, inflation is often accompanied by higher interest rates, which could reduce the fair value of our outstanding debt obligations. In an inflationary environment, depending on airline industry and other economic conditions, we may be unable to raise prices enough to keep up with the rate of inflation, which would reduce our profit margins. We have experienced, and continue to experience, increases in the prices of labor and other costs of providing service. Continued inflationary pressures could impact our profitabilit y.
RISKS RELATING TO THE COMMON STOCK TRADING PRICE
The Company’s Common Stock trading price may be affected by numerous factors that may impose a financial risk on the Company’s stockholders.
The trading price of our common stock may fluctuate due to many factors, including:
•risks relating to our business described in this Annual Report;
•sales of our securities by a few stockholders or even a single significant stockholder;
•general economic conditions;
•changes in accounting mandated under GAAP;
•quarterly variations in our operating results;
•our financial condition, performance and prospects;
•changes in financial estimates by us;
•the level, direction and volatility of interest rates and expectations of changes in rates;
•the market for securities similar to our common stock; and
•changes in our capital structure, including additional issuances by us of debt or equity securities.
In addition, the U.S. stock markets have experienced price and volume volatility that has affected many companies’ stock prices, often for reasons unrelated to the operating performance of those companies.
18

Table of Contents
RISKS RELATING TO OUR FOREIGN OPERATIONS
A substantial portion of our lease revenue comes from foreign customers, subjecting us to divergent regulatory requirements.
For the year ended December 31, 2021, 54% of our lease revenue was generated by leases to foreign customers. Such international leases present risks to us because certain foreign laws, regulations and judicial procedures may not be as protective of lessor rights as those which apply in the United States. We are also subject to risks of foreign laws that affect the timing and access to courts and may limit our remedies when collecting lease payments and recovering assets. None of our leased engines have been expropriated; however, we can give no assurance that political instability abroad and changes in the policies of foreign nations will not present expropriation risks in the future that are not covered by insurance.
Substantially all of our leases require payments in U.S. dollars but many of our customers operate in other currencies; if foreign currencies devalue against the U.S. dollar, our lessees may be unable to make their payments to us.
Substantially all of our current leases require that payments be made in U.S. dollars. If the currency that our lessees typically use in operating their businesses devalues against the U.S. dollar, those lessees could encounter difficulties in making payments in U.S. dollars. Furthermore, many foreign countries have currency and exchange laws regulating international payments that may impede or prevent payments from being paid to us in U.S. dollars. Future leases may provide for payments to be made in euros or other foreign currencies. Any change in the currency exchange rate that reduces the amount of U.S. dollars obtained by us upon conversion of future lease payments denominated in euros or other foreign currencies, may, if not appropriately hedged by us, have a material adverse effect on us and increase the volatility of our earnings. If payments on our leases are made in foreign currency, our risks and hedging costs will increase.
We operate globally and are affected by our customers’ local and regional economic and other risks.
We believe that our customers’ growth and financial condition are driven by economic growth in their service areas. The largest portion of our foreign lease revenues comes from Europe. European airline operations are among the most heavily regulated in the world. At the same time, low-cost carriers have exerted substantial competitive and financial pressure on major European airlines. Low-cost carriers are having similar effects in North America and elsewhere.
Our operations may also be affected by political or economic instability, such as those arising from the escalating conflict between Russia and Ukraine; in the areas, countries or regions where we have customers, particularly Europe.
We may not be able to enforce our rights as a creditor if a lessee files for bankruptcy outside of the United States.
When a debtor seeks protection under the United States Bankruptcy Code, creditors are automatically stayed from enforcing their rights. In the case of United States-certificated airlines, Section 1110 of the Bankruptcy Code provides certain relief to lessors of aircraft equipment. Section 1110 has been the subject of significant litigation and we can give no assurance that Section 1110 will protect our investment in aircraft or engines in the event of a lessee’s bankruptcy. In addition, Section 1110 does not apply to lessees located outside of the United States and applicable foreign laws may not provide comparable protection.
Liens on our engines or aircraft could exceed the value of such assets, which could negatively affect our ability to repossess, lease or sell a particular engine or aircraft.
Liens that secure the payment of repairers’ charges or other liens may, depending on the jurisdiction, attach to engines and aircraft. Engines also may be installed on airframes to which liens unrelated to the engines have attached. These liens may secure substantial sums that may, in certain jurisdictions or for limited types of liens, exceed the value of the particular engine or aircraft to which the liens have attached. In some jurisdictions, a lien may give the holder the right to detain or, in limited cases, sell or cause the forfeiture of the engine or aircraft. Such liens may have priority over our interest as well as our creditors’ interest in the engines or aircraft, either because they have such priority under applicable local law or because our creditors’ security interests are not filed in jurisdictions outside the United States. These liens and lien holders could impair our ability to repossess and lease or sell the engines or aircraft. We cannot give assurance that our lessees will comply with their obligations to discharge third-party liens on our assets. If they do not, we may, in the future, find it necessary to pay the claims secured by such liens to repossess such assets.
In certain countries, an engine affixed to an aircraft may become an accession to the aircraft and we may not be able to exercise our ownership rights over the engine.
In some jurisdictions, an engine affixed to an aircraft may become an accession to the aircraft, so that the ownership rights of the owner of the aircraft supersede the ownership rights of the owner of the engine. If an aircraft is security for the owner’s obligations to a third-party, the security interest in the aircraft may supersede our rights as owner of the engine. This legal principle could limit our ability to repossess an engine in the event of a lessee bankruptcy or lease default while the aircraft with the engine installed remains in such a jurisdiction. We may suffer a loss if we are not able to repossess engines leased to lessees in these jurisdictions.
19

Table of Contents
Changes to trade policy, tariff, sanction and import/export regulations may have a material adverse effect on our business, financial condition and results of operations.
Changes in U.S. or international, political, regulatory and economic conditions or in laws and policies governing foreign trade and investment in the territories or countries where we currently conduct our business, could adversely affect our business. The executive branch of the United States government has instituted or proposed changes in trade policies that include the negotiation or termination of trade agreements, the imposition of higher tariffs on imports into the U.S., economic sanctions on corporations or countries, and other government regulations affecting trade between the U.S. and other countries that will affect the manner in which we conduct our business. Trading partners of the United States have also implemented and threatened to implement retaliatory tariffs and/or other impediments to trade.
As a result of new or threatened tariffs, sanctions and/or impediments to trade, both from the United States and other countries, there may be greater restrictions and economic disincentives on international trade. The new or threatened tariffs, sanctions and other changes in trade policy could trigger retaliatory actions by affected countries, and certain foreign governments have instituted or are considering imposing tariffs and/or economic sanctions on certain U.S. goods. We do a significant amount of business that would be impacted by changes to the trade policies of the U.S. and foreign countries (including governmental action related to tariffs, international trade agreements, or economic sanctions). Such changes have the potential to adversely impact the U.S. economy or certain sectors thereof, our industry and the global demand for our products and services, and as a result, could have an adverse effect on our business, financial condition and results of operations.
The effects of the United Kingdom’s withdrawal from the European Union (“Brexit”), including trade agreements, are not yet known and the uncertainty creates challenges and risks which may adversely affect our business.
On June 23, 2016, the UK voted in favor of a referendum to leave the European Union, commonly referred to as “Brexit” and the UK ceased to be a member of the European Union on January 31, 2020. A transition period through December 31, 2020 was established to allow the UK and the European Union to negotiate the terms of the UK’s withdrawal. However, there is continued uncertainty surrounding the future relationship between the UK and European, including any trade agreements between them, which could adversely affect European and worldwide economic and market conditions, and contribute to instability in global financial and foreign exchange markets. In addition, Brexit could lead to legal uncertainty and potentially divergent national laws and regulations as the United Kingdom determines which European Laws to replace or replicate. The ultimate effects of Brexit will depend on the specific terms of any agreement the UK and the European Union reach to provide access to each other’s respective markets.
We have a presence in the UK and certain European Union countries, including Ireland, and France. During 2021, we derived approximately 54% of our core leasing revenue from international business. The consequences of Brexit could introduce significant uncertainties into global financial markets and adversely impact the markets in which we and our customers operate.
RISKS RELATED TO OUR SMALL SIZE AND CORPORATE STRUCTURE
Intense competition in our industry, particularly with major companies with substantially greater financial, personnel, marketing and other resources, could cause our revenues and business to suffer.
The engine and aircraft leasing industry is highly competitive and global. Our primary competitors include GE Capital Aviation Services, Shannon Engine Support Ltd., Pratt & Whitney, Rolls-Royce Partners Finance and Engine Lease Finance Corporation.
Our primary competitors generally have significantly greater financial, personnel and other resources, as well as a physical presence in more locations, than we do. In addition, competing engine lessors may have lower costs of capital and may provide financial or technical services or other inducements to customers, including the ability to sell or lease aircraft, offer maintenance and repair services or provide other forms of financing that we do not provide. We cannot give assurance that we will be able to compete effectively or that competitive pressures will not adversely affect us.
There is no organized market for the spare engines or the aircraft we purchase. Typically, we purchase engines and aircraft from commercial aircraft operators, engine manufacturers, MROs and other suppliers. We rely on our representatives, advertisements and reputation to generate opportunities to purchase and sell engines and aircraft. The market for purchasing engine and aircraft portfolios is highly competitive, generally involving an auction bidding process. We can give no assurance that engines and aircraft will continue to be available to us on acceptable terms and in the types and quantities we seek consistent with the diversification requirements of our debt facilities and our portfolio diversification goals.
Substantially all of our assets are pledged to our creditors.
Substantially all of our assets are pledged to secure our obligations to creditors. Our revolving credit banks have a lien on all of our assets, including our residual interests in WEST III, WEST IV, WEST V and WEST VI. Due to WEST III’s, WEST IV’s, WEST V’s and WEST VI’s bankruptcy remote structure, that interest is subject to the prior payments of WEST III’s, WEST IV’s, WEST V’s
20

Table of Contents
and WEST VI’s debt and other obligations. Therefore, our rights and the rights of our creditors to participate in any distribution of the assets of WEST III, WEST IV, WEST V and WEST VI upon liquidation, reorganization, dissolution or winding up will be subject to the prior claims of WEST III’s, WEST IV’s, WEST V’s and WEST VI’s creditors. Similarly, the rights of our shareholders are subject to satisfaction of the claims of our lenders and other creditors.
We may be unable to manage the expansion of our operations.
We can give no assurance that we will be able to manage effectively the current and potential expansion of our operations, or that if we are successful expanding our operations that our systems, procedures or controls will be adequate to support our operations, in which event our business, financial condition, results and cash flows could be adversely affected.
Any acquisition or expansion involves various risks, which may include some or all of the following:
•incurring or assuming additional debt;
•diversion of management’s time and attention from ongoing business operations;
•future charges to earnings related to the possible impairment of goodwill and the write down of other intangible assets;
•risks of unknown or contingent liabilities;
•difficulties in the assimilation of operations, services, products and personnel;
•unanticipated costs and delays;
•risk that the acquired business does not perform consistently with our growth and profitability expectations;
•risk that growth will strain our infrastructure, staff, internal controls and management, which may require additional personnel, time and expenditures; and
•potential loss of key employees and customers.
Any of the above factors could have a material adverse effect on us.
We are subject to governmental regulation and our failure to comply with these regulations could cause the government to withdraw or revoke our authorizations and approvals to do business and could subject us to penalties and sanctions that could harm our business.
Governmental agencies throughout the world, including the FAA, highly regulate the manufacture, repair and operation of all aircraft operated in the United States and equivalent regulatory agencies in other countries, such as the EASA in Europe, regulate aircraft operated in those countries. We include, with the aircraft, engines and related parts that we purchase, lease and sell to our customers, documentation certifying that each part complies with applicable regulatory requirements and meets applicable standards of airworthiness established by the FAA or the equivalent regulatory agencies in other countries. Specific regulations vary from country to country, although regulatory requirements in other countries are generally satisfied by compliance with FAA requirements. With respect to a particular engine or engine component, we utilize FAA and/or EASA certified repair stations to repair and certify engines and components to ensure marketability. The revocation or suspension of any of our material authorizations or approvals would have an adverse effect on our business, financial condition and results of operations. New and more stringent government regulations, if adopted and enacted, could have an adverse effect on our business, financial condition and results of operations. In addition, certain product sales to foreign countries require approval or licensing from the U.S. government. Denial of export licenses could reduce our sales to those countries and could have a material adverse effect on our business.
We are effectively controlled by one principal stockholder, who has the power to contest the outcome of most matters submitted to the stockholders for approval and to affect our stock prices adversely if he were to sell substantial amounts of his common stock.
Charles F. Willis, IV is the founder of WLFC, has served as Chief Executive Officer and a Director since our establishment in 1985, served as President until July 2011, and has served as Chairman of the Board of Directors since 1996. Mr. Willis has over 45 years of experience in the aviation industry which includes serving as President of Willis Lease’s predecessor, Charles F. Willis Company, which purchased, financed and sold a variety of large commercial transport aircraft and provided consulting services to the aviation industry, Assistant Vice President of Sales at Seaboard World Airlines, a freight carrier, and various positions at Alaska Airlines, including positions in the flight operations, sales and marketing departments. As our founder and Chief Executive Officer, Mr. Willis brings to the Board significant senior leadership, sales and marketing, industry, technical and global experience, as well as a deep institutional knowledge of the Company, its operations and customer relations.
21

Table of Contents
As of December 31, 2021, Mr. Willis beneficially owned or had the ability to direct the voting of 2,977,244 shares of our common stock, representing approximately 46% of the issued shares of our common stock. As a result, Mr. Willis effectively controls us and has the power to contest the outcome of substantially all matters submitted to our stockholders for approval, including the election of our board of directors. In addition, future sales by Mr. Willis of substantial amounts of our common stock, or the potential for such sales, could adversely affect the prevailing market price of our common stock.
Our business might suffer if we were to lose the services of certain key employees.
Our business operations depend upon our key employees, including our executive officers. Loss of any of these employees, particularly our Chief Executive Officer, could have a material adverse effect on our business as our key employees have knowledge of our industry and customers and would be difficult to replace.
We are the servicer and administrative agent for the WEST III, WEST IV, WEST V and WEST VI facilities and our cash flows would be materially and adversely affected if we were removed from these positions.
We are the servicer and administrative agent with respect to engines in the WEST III, WEST IV, WEST V and WEST VI facilities. We receive monthly fees of 11.5% as servicer (3.5% of which is subordinated in each case) and 2.0% as administrative agent of the aggregate net rents actually received by WEST III, WEST IV, WEST V and WEST VI on their engines. We may be removed as servicer and or administrative agent of our WEST III, WEST IV, WEST V and WEST VI facilities by an affirmative vote of a requisite number of the WEST III, WEST IV, WEST V and WEST VI note holders. Such vote could happen upon the occurrence of certain specified events as outlined in the WEST III, WEST IV, WEST V and WEST VI servicing and administrative agency agreements.
As of December 31, 2021, we were in compliance with the financial covenants set forth in the WEST III, WEST IV, WEST V and WEST VI servicing and administrative agency agreements. There can be no assurance that we will be in compliance with these covenants in the future or will not otherwise be terminated as servicer or administrative agent for the WEST III, WEST IV, WEST V and WEST VI facilities. If we are removed from such role with those facilities, our expenses would increase as our consolidated VIE’s WEST III, WEST IV, WEST V and WEST VI, would have to hire an outside provider to replace the servicer and administrative agent functions, and we would be materially and adversely affected. Consequently, our business, financial condition, results of operations and cash flows would be adversely affected.
Provisions in Delaware law and our charter and bylaws might prevent or delay a change of control.
Certain provisions of law, our amended certificate of incorporation, bylaws and amended rights agreement could make the following more difficult: (1) an acquisition of us by means of a tender offer, a proxy contest or otherwise, and (2) the removal of incumbent officers and directors.
Our board of directors has authorized the issuance of shares of 6.5% Series A Preferred Stock and 6.5% Series A-2 Preferred Stock, by us and to Development Bank of Japan Inc. (“DBJ”) with American Stock Transfer and Trust Company, serving as rights agent. The rights agreement could make it more difficult to proceed with and tends to discourage a merger, tender offer or proxy contest. Our amended certificate of incorporation also provides that stockholder action can be taken only at an annual or special meeting of stockholders and may not be taken by written consent and, in certain circumstances relating to acquisitions or other changes in control, requires an 80% super majority vote of all outstanding shares of our common stock. Our bylaws also limit the ability of stockholders to raise matters at a meeting of stockholders without giving advance notice.
ITEM 1B. UNRESOLVED STAFF COMMENTS
None.
ITEM 2. PROPERTIES
Our principal offices are located in Coconut Creek, Florida where we own 56,000 square feet of office and warehouse space. We also own 30,000 square feet of office and warehouse space in Bridgend, Wales, UK. We lease 60,000 square feet of hangar and office space in Darlington, UK. We sub-lease 1,615 square feet of office and warehouse space for our operations in San Diego, California. We lease 4,166 square feet of office space in Dublin, Ireland. We also lease facilities for sales and operations in Larkspur, CA; Shanghai, China; Singapore; and Blagnac, France.
The Company’s Leasing and Related Operations segment conducts business in all of the properties above. The Spare Parts segment primarily conducts business in the Coconut Creek, Florida facility.
22

Table of Contents
ITEM 3. LEGAL PROCEEDINGS
None.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.
PART II
ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY AND RELATED SHAREHOLDER MATTERS
Our Common Stock is listed on the Nasdaq Global Market under the symbol WLFC. As of March 11, 2022, there were approximately 2,043 shareholders of record of our Common Stock.
We have not made any dividend payments to our common shareholders since our inception as all available cash has been utilized for the business. We have no intention of paying dividends on our common stock in the foreseeable future. In addition, certain of our debt facilities contain negative covenants which, in certain situations, prohibit us from paying any dividends or making distributions of any kind with respect to our common stock. The Series A-1 and Series A-2 Preferred Stock carry a quarterly dividend at the rate per annum of 6.5% per share, with a $20.00 liquidation preference per share.
The following table outlines our Equity Compensation Plan Information:

Plan Category |  | Number of securities to be issued upon exercise of outstanding options, warrants and rights |  | Weighted-average exercise price of outstanding options, warrants and rights |  | Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
|  | (a) |  | (b) |  | (c)
Plans Not Approved by Shareholders: |  |  |  |  |  |
None |  | n/a |  | n/a |  | n/a
Plans Approved by Shareholders: |  |  |  |  |  |
Employee Stock Purchase Plan |  | — |  | n/a |  | 133,327 |
2007 Stock Incentive Plan |  | — |  | n/a |  | —
2021 Stock Incentive Plan |  | — |  | n/a |  | 968,296 |
Total |  | — |  |  | n/a |  | 1,101,623 |

The 2007 Stock Incentive Plan (the “2007 Plan”) was adopted in May 2007. Under this 2007 Plan, a total of 2,800,000 shares were authorized for stock-based compensation available in the form of either restricted stock awards (“RSAs”) or stock options. The RSAs are subject to service-based vesting, typically between one and four years, where a specific period of continued employment must pass before an award vests. The expense associated with these awards is recognized on a straight-line basis over the respective vesting period, with forfeitures accounted for as they occur. For any vesting tranche of an award, the cumulative amount of compensation cost recognized is equal to the portion of the grant‑date fair value of the award tranche that is actually vested at that date. As of December 31, 2021, there were no stock options outstanding under the 2007 Plan.
The 2018 Stock Incentive Plan (the “2018 Plan”) was adopted in May 2018. Under this 2018 Plan, a total of 800,000 shares were authorized for stock-based compensation, plus the number of shares remaining under the 2007 Plan and any future forfeited awards under the 2007 Plan, in the form of RSAs. In November 2021, the 2018 Plan was amended and restated as the 2021 Stock Incentive Plan (the “2021 Plan”) to increase the number of shares reserved for issuance under the 2021 Plan by 1,000,000 shares. The RSAs are subject to service-based vesting, typically between one and four years, where a specific period of continued employment must pass before an award vests. The expense associated with these awards is recognized on a straight-line basis over the respective vesting period, with forfeitures accounted for as they occur. For any vesting tranche of an award, the cumulative amount of compensation cost recognized is equal to the portion of the grant‑date fair value of the award tranche that is actually vested at that date.
As of December 31, 2021, the Company had granted 926,300 RSAs under the 2021 Plan and has 968,296 shares available for future issuance. The fair value of the restricted stock awards equaled the stock price at the grant date.
Effective December 31, 2018, the Board of Directors approved the renewal of the existing common stock repurchase plan extending the plan through December 31, 2020 and amending the plan to allow for repurchases of up to $60.0 million of the
23

Table of Contents
Company’s common stock until such date. Effective December 31, 2020, the Board of Directors approved the renewal of the existing common stock repurchase plan extending the plan through December 31, 2022. Repurchased shares are immediately retired. During 2021, the Company repurchased 268,408 shares of common stock for approximately $10.1 million at a weighted average price of $38.44. At December 31, 2021, approximately $44.8 million was available to purchase shares under the plan. As of December 31, 2021, the total number of common shares issued was approximately 6.5 million.
ITEM 6. SELECTED FINANCIAL DATA
Not applicable.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
OVERVIEW
Forward-Looking Statements. This Annual Report on Form 10-K includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact, including statements regarding prospects or future results of operations or financial position, made in this Annual Report on Form 10-K are forward-looking. We use words such as anticipates, believes, expects, future, intends, and similar expressions to identify forward-looking statements. Forward-looking statements reflect management’s current expectations and are inherently uncertain. Actual results could differ materially for a variety of reasons, including, among others: the effects on the airline industry and the global economy of events such as terrorist activity and the COVID-19 pandemic, changes in oil prices and other disruptions to the world markets; trends in the airline industry and our ability to capitalize on those trends, including growth rates of markets and other economic factors; risks associated with owning and leasing jet engines and aircraft; our ability to successfully negotiate equipment purchases, sales and leases, to collect outstanding amounts due and to control costs and expenses; changes in interest rates and availability of capital, both to us and our customers; our ability to continue to meet the changing customer demands; regulatory changes affecting airline operations, aircraft maintenance, accounting standards and taxes; and the market value of engines and other assets in our portfolio. These risks and uncertainties, as well as other risks and uncertainties that could cause our actual results to differ significantly from management’s expectations, are described in greater detail in Item 1A “Risk Factors” of Part I which, along with the other discussion in this report, describes some, but not all, of the factors that could cause actual results to differ significantly from management’s expectations.
General. Our core business is acquiring and leasing commercial aircraft and aircraft engines and related aircraft equipment pursuant to operating leases, all of which we sometimes collectively refer to as “equipment.” As of December 31, 2021, the majority of our leases were operating leases with the exception of certain failed sale-leaseback transactions classified as notes receivable under the guidance provided by ASC 842. As of December 31, 2021, we had 76 lessees in 40 countries. Our portfolio is continually changing due to acquisitions and sales. As of December 31, 2021, our $1,991.4 million equipment held for operating lease portfolio and $115.5 million notes receivable represented 304 engines, twelve aircraft, one marine vessel and other leased parts and equipment. As of December 31, 2021, we also managed 475 engines, aircraft and related equipment on behalf of other parties.
Our wholly owned subsidiary Willis Asset Management Limited (“Willis Asset Management”) is focused on the engine management and consulting business. Willis Aeronautical Services, Inc. (“Willis Aero”) is a wholly owned subsidiary whose primary focus is the sale of aircraft engine parts and materials through the acquisition or consignment of aircraft and engines.
In 2011 we entered into an agreement with Mitsui & Co., Ltd. to participate in a joint venture formed as a Dublin-based Irish limited company, WMES, for the purpose of acquiring and leasing jet engines. Each partner holds a 50% interest in the joint venture. WMES owns a lease portfolio, inclusive of a note receivable, of 37 engines and five aircraft with a net book value of $292.5 million at December 31, 2021. Our investment in the joint venture was $39.1 million as of December 31, 2021.
In 2014 we entered into an agreement with CASC to participate in CASC Willis, a joint venture based in Shanghai, China. Each partner holds a 50% interest in the joint venture. The company acquires and leases jet engines to Chinese airlines and concentrates on meeting the fast-growing demand for leased commercial aircraft engines and aviation assets in the People’s Republic of China. CASC Willis owned a lease portfolio of four engines with a net book value of $49.0 million as of December 31, 2021. Our investment in the joint venture was $16.9 million as of December 31, 2021.
We actively manage our portfolio and structure our leases to maximize the residual values of our leased assets. Our leasing business focuses on popular Stage IV commercial jet engines manufactured by CFMI, General Electric, Pratt & Whitney, Rolls Royce and International Aero Engines. These engines are the most widely used engines in the world, powering Airbus, Boeing, Bombardier and Embraer aircraft.
COVID-19 Impact. Throughout the next year, we plan to continue to stay focused on cost control and remain prudent with our capital expenditures. We have continued to temporarily close our headquarters and other offices, require our employees and
24

Table of Contents
contractors to predominately work remotely, and implement travel restrictions, all of which represent a significant disruption in how we operate our business. We have taken various proactive actions in an attempt to mitigate the financial impact of the COVID-19 pandemic. During 2020, 9% of our employees have been either furloughed, or subject to a form of reduced compensation which was subsequently reversed in 2021. The operations of the Company’s partners and customers have likewise been disrupted. While the duration and extent of the COVID-19 pandemic depends on future developments that cannot be accurately predicted at this time, it has had an adverse effect on the global economy and the ultimate societal and economic impact of the COVID-19 pandemic remains unknown. In particular, the ongoing COVID-19 pandemic has caused significant disruptions to the airline industry and has resulted in a dramatic reduction in demand for air travel domestically and abroad, which is likely to continue for the foreseeable future. Lower demand for air travel in turn presents significant risks to the Company, resulting in impacts which have adversely affected the Company’s business, results of operation, and financial condition. Lower demand for spare parts and engine and airframe leasing has negatively impacted collections of accounts receivable, caused the Company’s lessee customers to not enter into new leases, resulted in reduced spending by new and existing customers for leases or spare parts or equipment, resulted in lower usage fees, caused some of the Company’s customers to go out of business, and limited the ability of the Company’s personnel to travel to customers and potential customers. The Company is not able to evaluate or foresee the full extent of these impacts at the current time. During the year ended December 31, 2021, the Company experienced a decrease in lease rent revenue and maintenance reserve revenue as compared to the prior year. Additionally, as of December 31, 2021, the Company has, in certain situations, agreed to rent concessions which resulted in a total reduction to rent revenues of $0.5 million for the year ended December 31, 2021. Rent concessions for the year ended December 31, 2020 resulted in a total reduction of rent revenue of $6.5 million. The rent concessions provide lessees with payment deferral options or reduced rent, where the revised cash flows are substantially the same or less (i.e., the rights of the lessor and obligations of the lessee have not substantially increased) as the original lease agreements. There is no impact on the timing of revenue recognition for rent concessions that result in short term payment deferrals. The rent concessions with reduced rent qualify for the COVID-19 practical expedient to account for the rent concessions outside of the modification framework. Due to the impact of recent events, including challenges from declines in market conditions, the Company performed quarterly interim impairment analyses. The COVID-19 pandemic has materially affected our business and financial results for the year ended December 31, 2021 and may continue to do so indefinitely thereafter.
The scope and nature of the impact of COVID-19 on the airline industry, and in turn our business, continue to evolve and the outcomes are uncertain. Given the uncertainty in the rapidly changing market and economic conditions related to COVID-19, we will continue to evaluate the nature and extent of the impact to our business and financial position. The ultimate extent of the effects of the COVID-19 pandemic on our Company will depend on future developments, and such effects could exist for an extended period of time.
CRITICAL ACCOUNTING POLICIES AND ESTIMATES
The preparation of our consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to residual values, estimated asset lives, impairments and bad debts. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
We believe the following critical accounting policies, grouped by our activities, affect our more significant judgments and estimates used in the preparation of our consolidated financial statements:
Leasing Related Activities. Revenue from leasing of aircraft equipment is recognized as operating lease revenue on a straight-line basis over the terms of the applicable lease agreements. Where collection cannot be reasonably assured, for example, upon a lessee bankruptcy, we do not recognize revenue until cash is received. We also estimate and charge to income a provision for bad debts based on our experience in the business and with each specific customer and the level of past due accounts. The financial condition of our customers may deteriorate and result in actual losses exceeding the estimated allowances. In addition, any deterioration in the financial condition of our customers may adversely affect future lease revenues. As of December 31, 2021, the majority of our leases were operating leases with the exception of certain failed sale-leaseback transactions classified as notes receivable under the guidance provided by ASC 842. Under an operating lease, we retain title to the leased equipment, thereby retaining the potential benefit and assuming the risk of the residual value of the leased equipment.
We generally depreciate engines on a straight-line basis over 15 years to a 55% residual value. Aircraft and airframes are generally depreciated on a straight-line basis over 13 to 20 years to a 15% to 17% residual value. The marine vessel is depreciated on a straight-line basis over an estimated useful life of 18 years to a 15% residual value. Other leased parts and equipment are generally depreciated on a straight-line basis over 14 to 15 years to a 25% residual value. Major overhauls paid for by us, which improve functionality or extend the original useful life, are capitalized and depreciated over the shorter of the estimated period to the next overhaul (“deferral method”) or the remaining useful life of the equipment. We do not accrue for planned major maintenance. For equipment which is unlikely to be repaired at the end of its current expected life, and is likely to be disassembled upon lease
25

Table of Contents
termination, we depreciate the equipment over its estimated life to a residual value based on an estimate of the wholesale value of the parts after disassembly. As of December 31, 2021, 40 engines having a net book value of $37.0 million were depreciated under this policy with estimated useful lives ranging from 1 to 113 months.
Asset Valuation. Long-lived assets and certain identifiable intangibles to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable, and long-lived assets and certain identifiable intangibles to be disposed of are reported at the lower of carrying amount or fair value less cost to sell.
On a quarterly basis, management monitors the lease portfolio for events which may indicate that a particular asset may need to be evaluated for potential impairment. These events may include a decision to part-out or sell an asset, knowledge of specific damage to an asset, or supply/demand events which may impact the Company’s ability to lease an asset in the future. On an annual basis, even absent any such ‘triggering event’, we evaluate the carrying value of the assets in our lease portfolio to determine if any impairment exists.
Impairment may be identified by several factors, including, comparison of estimated sales proceeds or forecasted undiscounted cash flows over the life of the asset with the asset’s book value. If the forecasted undiscounted cash flows are less than the book value, the asset is written down to its fair value. When evaluating for impairment, we test at the individual asset level (e.g., engine or aircraft), as each asset generates its own stream of cash flows, including lease rents, maintenance reserves and repair costs.
We must make assumptions which underlie the most significant and subjective estimates in determining whether any impairment exists. Those estimates, and the underlying assumptions, are as follows:
•Fair value – we determine fair value by reference to independent appraisals, quoted market prices (e.g., an offer to purchase) and other factors such as current data from airlines, engine manufacturers and MRO providers as well as specific market sales and repair cost data.
•Future cash flows – when evaluating the future cash flows that an asset will generate, we make assumptions regarding the lease market for specific engine models, including estimates of market lease rates and future demand. These assumptions are based upon lease rates that we are obtaining in the current market as well as our expectation of future demand for the specific engine/aircraft model.
If the forecasted undiscounted cash flows and fair value of our long-lived assets decrease in the future we may incur impairment charges. Write-downs of equipment to their estimated fair values totaled $7.7 million for the year ended December 31, 2021 which included write-downs of $3.9 million due to a management decision to monetize three engines and one airframe either by sale to a third party or for part-out and $3.8 million for the adjustment of the carrying value of seven impaired engines. As of December 31, 2021, included within equipment held for lease and equipment held for sale was $36.0 million in remaining book value of 22 assets which were previously written down.
Write-downs of equipment to their estimated fair values totaled $20.5 million for the year ended December 31, 2020 which included write-downs of $15.2 million due to a management decision to monetize 10 engines and two airframes either by sale to a third party or for part-out and $5.3 million for the adjustment of the carrying value of seven impaired engines.
Management continuously monitors the aviation industry and evaluates any trends, events or uncertainties involving airlines, individual aircraft and engine models, as well as the engine leasing and sale market which would materially affect the methodology or assumptions employed by WLFC. We do not consider there to be any trends, events or uncertainties that currently exist or that are reasonably likely to occur that would materially affect our methodology or assumptions. However, should any arise, we will adjust our methodology and our disclosure accordingly.
Spare parts inventory is stated at lower of cost or net realizable value. An impairment charge for excess or inactive inventory is recorded based upon an analysis that considers current inventory levels, historical usage patterns, future sales expectations and salvage value.
Accounting for Maintenance Expenditures and Maintenance Reserves. Use fees received are recognized in revenue as maintenance reserve revenue if they are not reimbursable to the lessee. Use fees that are reimbursable are recorded as a maintenance reserve liability until they are reimbursed to the lessee, the lease terminates, or the obligation to reimburse the lessee for such reserves ceases to exist, at which time they are recognized in revenue as maintenance reserve revenue. Our expenditures for maintenance are expensed as incurred. Expenditures that meet the criteria for capitalization are recorded as an addition to equipment recorded on the balance sheet.
26

Table of Contents
RECENT ACCOUNTING PRONOUNCEMENTS
The most recent adopted and to be adopted accounting pronouncements are described in Note 1(x) to our Consolidated financial statements included in this Annual Report on Form 10-K.
RESULTS OF OPERATIONS
Year Ended December 31, 2021 Compared to the Year Ended December 31, 2020
Revenue is summarized as follows:

| Years Ended December 31,
| 2021 |  | 2020 |  | % Change
| (dollars in thousands)
Lease rent revenue | $ | 134,831 |  |  | $ | 142,895 |  |  | (5.6) | %
Maintenance reserve revenue | 73,961 |  |  | 105,365 |  |  | (29.8) | %
Spare parts and equipment sales | 17,417 |  |  | 18,625 |  |  | (6.5) | %
Gain on sale of leased equipment | 5,975 |  |  | 3,391 |  |  | 76.2 | %
Gain on sale of financial assets | 10,874 |  |  | — |  |  | 100.0 | %
Asset transition fee | 6,256 |  |  | — |  |  | 100.0 | %
Other revenue | 24,888 |  |  | 18,416 |  |  | 35.1 | %
Total revenue | $ | 274,202 |  |  | $ | 288,692 |  |  | (5.0) | %

Lease Rent Revenue. Lease rent revenue consists of rental income from long-term and short-term engine leases, aircraft leases, and other leased parts and equipment. Lease rent revenue decreased by $8.1 million, or 5.6%, to $134.8 million for the year ended December 31, 2021 from $142.9 million for the year ended December 31, 2020. The decrease is primarily due to lower average utilization when compared to the prior year which includes operations prior to the COVID-19 pandemic. During the year ended December 31, 2021, we purchased equipment (including capitalized costs) totaling $205.8 million, which primarily consisted of 34 engines, four airframes, one aircraft and other parts and equipment purchased for our lease portfolio. During the year ended December 31, 2020, we purchased equipment (including capitalized costs) totaling $409.3 million, which primarily consisted of 38 engines and other parts and equipment purchased for our lease portfolio.
One customer accounted for more than 10% of total lease rent revenue during the year ended December 31, 2021 and 2020, respectively.
The aggregate net book value of equipment held for lease at December 31, 2021 and 2020 was $1,991.4 million and $115.5 million notes receivable and $1,886.6 million and $158.7 million notes receivable, respectively. Average utilization (based on net book value) was approximately 81% and 84% for the year ended December 31, 2021 and 2020, respectively.
Maintenance Reserve Revenue. Maintenance reserve revenue for the year ended December 31, 2021 decreased $31.4 million, or 29.8%, to $74.0 million from $105.4 million for the year ended December 31, 2020. Long-term maintenance revenue was $56.3 million for the year ended December 31, 2021 compared to $87.7 million for the year ended December 31, 2020. Engines out on lease with “non-reimbursable” usage fees generated $17.7 million of short-term maintenance revenues for the years ended December 31, 2021 and 2020.
Spare Parts and Equipment Sales. Spare parts and equipment sales for the year ended December 31, 2021 decreased by $1.2 million, or 6.5%, to $17.4 million compared to $18.6 million for the year ended December 31, 2020. Spare parts sales for the year ended December 31, 2021 were $17.4 million compared to $17.7 million in 2020. There were no equipment sales for the year ended December 31, 2021 compared to $0.9 million for the sale of one engine for the year ended December 31, 2020.
Gain on Sale of Leased Equipment. During the year ended December 31, 2021, we sold 12 engines and one airframe from the lease portfolio for a net gain of $6.0 million. During the year ended December 31, 2020, we sold 11 engines and two airframes from the lease portfolio for a net gain of $3.4 million.
Gain on Sale of Financial Assets. During the year ended December 31, 2021, we sold two notes receivable for a net gain of $10.9 million. There were no gain on sale of financial assets during the year ended December 31, 2020.
Asset Transition Fee. Asset transition fee was $6.3 million during the year ended December 31, 2021 reflecting the settlement received from the close out of an engine transition program. There was no asset transition fee during the year ended December 31, 2020.
27

Table of Contents
Other Revenue. Other revenue increased by $6.5 million, to $24.9 million for the year ended December 31, 2021 from $18.4 million in 2020. The increase primarily reflects increases of $2.7 million in service related fees and $3.4 million in interest income from our notes receivable.
Depreciation and Amortization Expense. Depreciation and amortization expense decreased $4.0 million, or 4.3%, to $90.5 million for the year ended December 31, 2021 compared to $94.5 million for the year ended December 31, 2020. The decrease reflects certain assets reaching the end of their depreciable lives as compared to the prior year period.
Cost of Spare Parts and Equipment Sales. Cost of spare parts and equipment sales decreased by $1.8 million, or 10.9%, to $14.9 million for the year ended December 31, 2021 compared to $16.8 million in the prior year period due to lower spare parts sales. There were no cost of equipment sales for the year ended December 31, 2021 compared to $0.1 million for the year ended December 31, 2020.
Write-down of Equipment. Write-downs of equipment to their estimated fair values totaled $7.7 million for the year ended December 31, 2021 which included write-downs of $3.9 million due to a management decision to monetize three engines and one airframe either by sale to a third party or for part-out and $3.8 million for the adjustment of the carrying value of seven impaired engines. Write-down of equipment was $20.5 million for the year ended December 31, 2020 reflecting the write-down of 10 engines and two airframes due to a management decision to monetize the assets either by sale to a third-party or for part-out and an adjustment of the carrying value of seven impaired engines.
General and Administrative Expenses. General and administrative expenses increased 11.0% to $75.4 million for the year ended December 31, 2021 compared to $67.9 million in 2020. The increase primarily reflects increased stock-based compensation as compared to the prior year period which was driven by an increased stock price at time of grant.
Technical Expense. Technical expenses consist of the non-capitalized cost of engine repairs, engine thrust rental fees, outsourced technical support services, sublease engine rental expense, engine storage and freight costs. These expenses increased 43.6% to $9.4 million for the year ended December 31, 2021, compared to $6.5 million in 2020. The increase primarily reflects the increase in engine repairs.
Net Finance Costs. Net finance costs increased to $68.0 million in the year ended December 31, 2021, from $67.7 million for the year ended December 31, 2020. The slight increase was primarily due to the increase in interest expense related to the WEST VI transaction partly offset by a loss on debt extinguishment of $4.7 million recognized in the prior year period.
Income Taxes. Income tax expense for the year ended December 31, 2021 decreased to $5.8 million from $7.6 million for the comparable period in 2020. The effective tax rate for the years ended December 31, 2021 and December 31, 2020 was 63.3% and 43.8%, respectively. The increase in the effective tax rate was predominantly due to change in tax laws in the United Kingdom.
FINANCIAL POSITION, LIQUIDITY AND CAPITAL RESOURCES
At December 31, 2021, the Company had $95.6 million of cash, cash equivalents and restricted cash. At December 31, 2021, $13.1 million in cash and cash equivalents and restricted cash were held in foreign subsidiaries. We do not intend to repatriate the funds held in foreign subsidiaries to the United States. In the event that we decide to repatriate these funds to the United States, we would be required to accrue and pay taxes upon the repatriation.
We generate significant cash flow from our core business as evidenced by our net cash provided by operating activities which was $90.7 million in 2021. The Company’s largest recurring expense is its non-cash depreciation. Beyond cash provided through operations, we generally fund the growth of our business through a combination of equity and corporate borrowings. Our credit facility is our primary source of capital to grow our business. We also access the Asset Backed Security (“ABS”) market to establish term fixed rate debt financing to better match our long-lived assets. The Company’s credit facility matures in 2024 and we have historically rolled that facility prior to its expiration. The ABS market continues to be open and active for issuers like the Company. Refer to Note 6 of the consolidated financial statements for a detailed discussion of the Company's debt obligations.
We finance our growth through borrowings secured by our equipment lease portfolio. The Company’s largest recurring expense is its non-cash depreciation. Beyond cash provided through operations, we generally fund the growth of our business through borrowings provided by our credit facility as well the issuance of ABS debt securities which allow us to establish term fixed rate debt against our long-lived assets. The Company’s credit facility matures in 2024 and has historically rolled that facility prior to its expiration. The ABS market continues to be open and active for issuers like the Company. Cash of approximately $513.7 million and $973.2 million in the years ended December 31, 2021 and 2020, respectively, was derived from this borrowing activity. In these same time periods $417.0 million and $530.8 million, respectively, was used to pay down related debt.
28

Table of Contents
The impact of the COVID-19 pandemic on the global business environment has caused and could result in additional customer bankruptcies, early lease returns, payment defaults, or future rental concessions which could reduce rent or defer customer payments, negatively impacting our financial results.
Preferred Stock Dividends
In October 2016, the Company sold and issued to Development Bank of Japan Inc. (“DBJ”) an aggregate of 1,000,000 shares of the Company’s 6.5% Series A Preferred Stock, $0.01 par value per share (the “Series A Preferred Stock”) at a purchase price of $20.00 per share. The net proceeds to the Company after deducting investor fees were $19.8 million.
In September 2017, the Company sold and issued to DBJ an aggregate of 1,500,000 shares of the Company’s 6.5% Series A-2 Preferred Stock, $0.01 par value per share (the “Series A-2 Preferred Stock”) at a purchase price of $20.00 per share. The net proceeds to the Company after deducting issuance costs were $29.7 million.
The Company’s Series A-1 Preferred Stock and Series A-2 Preferred Stock accrue quarterly dividends at the rate per annum of 6.5% per share. During the years ended December 31, 2021 and 2020, the Company paid total dividends of $3.3 million on the Series A-1 and Series A-2 Preferred Stock, respectively.
Cash Flows Discussion
Cash flows provided by operating activities were $90.7 million and $93.4 million in the years ended December 31, 2021 and 2020, respectively.
Cash flows from operations are driven significantly by payments made under our lease agreements, which comprise lease revenue, security deposits and maintenance reserves, and are offset by interest expense and general and administrative costs. Cash received as maintenance reserve payments for some of our engines on lease are partially restricted by our debt arrangements. The lease revenue stream, in the short-term, is at fixed rates while a portion of our debt is at variable rates. If interest rates increase, it is unlikely we could increase lease rates in the short term and this would cause a reduction in our earnings and operating cash flows. Revenue and maintenance reserves are also affected by the amount of equipment off lease. Approximately 82% and 78%, by book value, of our assets were on-lease as of December 31, 2021 and 2020, respectively. The average utilization rate for the year ended December 31, 2021 and 2020 was approximately 81% and 84%, respectively. If there is an increase in off-lease rates or deterioration in lease rates that are not offset by reductions in interest rates, there will be a negative impact on earnings and cash flows from operations.
There were no distributions received from our investment in WMES in the year ended December 31, 2021. Distributions received from WMES were $7.2 million in the year ended December 31, 2020.
Cash flows used in investing activities were $148.0 million for the year ended December 31, 2021 and primarily reflected $44.4 million related to leases entered into during 2021 which were classified as notes receivable under ASC 842 and $205.8 million for the purchase of equipment held for operating lease (including capitalized costs and prepaid deposits made during the year), partly offset by $37.6 million in proceeds from sales of equipment (net of selling expenses) and $58.4 million in proceeds from the sale of notes receivable (net of selling expenses). Cash flows used in investing activities were $506.7 million for the year ended December 31, 2020 and primarily reflected $136.6 million related to leases entered into during 2020 which were classified as notes receivable under ASC 842 and $409.3 million for the purchase of equipment held for operating lease (including capitalized costs and prepaid deposits made during the year), partly offset by $26.1 million in proceeds from sales of equipment (net of selling expenses) and $8.4 million in proceeds from the sale of a note receivable (net of selling expense).
Cash flows provided by financing activities for the year ended December 31, 2021 were $74.1 million and primarily reflected $513.7 million in proceeds from the issuance of debt obligations, partly offset by $417.0 million in principal payments, $4.6 million in debt issuance costs and $10.1 million in share repurchases. Cash flows provided by financing activities for the year ended December 31, 2020 were $428.5 million and primarily reflected $973.2 million in proceeds from the issuance of debt obligations, partly offset by $530.8 million in principal payments, $6.1 million in debt issuance costs, $2.4 million in debt prepayment costs and $1.5 million in share repurchases.
29

Table of Contents
Debt Obligations and Covenant Compliance
At December 31, 2021, debt obligations consists of loans totaling $1,790.3 million, net of unamortized issuance costs, payable with interest rates varying between approximately 1.8% and 7.4%. Substantially all of our assets are pledged to secure our obligations to creditors. For further information on our debt instruments, see Note 6 “Debt Obligations” in Part II, Item 8 of this Form 10-K.
In June 2021, WLFC entered into Amendment No. 2 to the Fourth Amended and Restated Credit Agreement dated as of June 7, 2019, which updates the provisions relating to the future discontinuance of the London Interbank Offered Rate (“LIBOR”) and sets forth the mechanics for establishing the Secured Overnight Financing Rate as a benchmark replacement rate.
In May 2021, WLFC and its direct, wholly-owned subsidiary Willis Engine Structured Trust VI (“WEST VI”), closed its offering of $336.7 million aggregate principal amount of fixed rate notes (“WEST VI Notes”). The WEST VI Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $278.6 million, the Series B Notes issued in an aggregate principal amount of $38.7 million and the Series C Notes issued in an aggregate principal amount of $19.4 million. The WEST VI Notes are secured by, among other things, WEST VI’s direct and indirect ownership interests in a portfolio of aircraft engines and an airframe.
The Series A Notes have a fixed coupon of 3.104%, an expected maturity of approximately eight years and a final maturity date in May 2046, the Series B Notes have a fixed coupon of 5.438%, an expected maturity of approximately eight years and a final maturity date in May 2046 and the Series C Notes have a fixed coupon of 7.385%, an expected maturity of approximately eight years and a final maturity date in May 2046. The Series A Notes were issued at a price of 99.99481% of par, the Series B Notes were issued at a price of 99.99996% of par and the Series C Notes were issued at a price of 99.99869% of par. Principal on the WEST VI Notes is payable monthly to the extent of available cash in accordance with a priority of payments included in the indenture.
The assets of WEST VI are not available to satisfy the Company’s obligations other than the obligations specific to WEST VI. WEST VI is consolidated for financial statement presentation purposes. WEST VI’s ability to make distributions and pay dividends to the Company is subject to the prior payments of its debt and other obligations and WEST VI’s maintenance of adequate reserves and capital. Under WEST VI’s indenture, cash is collected in a restricted account, which is used to service the debt and any remaining amounts, after debt service and defined expenses, are distributed to the Company. Additionally, a portion of maintenance reserve payments and lease security deposits are formulaically accumulated in restricted accounts and are available to fund future maintenance events and to secure lease payments, respectively. The WEST VI indenture requires that a minimum threshold of maintenance reserve and security deposit balances be held in restricted cash accounts.
In May 2021, WLFC repaid an existing note payable that was secured by two engines.
In March 2020, WLFC and its direct, wholly-owned subsidiary Willis Engine Structured Trust V (“WEST V”) (formerly known as Willis Engine Securitization Trust II (“WEST II”)), closed its offering of $366.2 million aggregate principal amount of fixed rate notes (the “WEST V Notes”). The WEST V Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $303.0 million, the Series B Notes issued in an aggregate principal amount of $42.1 million and the Series C Notes issued in an aggregate principal amount of $21.1 million. The WEST V Notes are secured by, among other things, WEST V’s direct and indirect ownership interests in a portfolio of aircraft engines and airframes.
The Series A Notes have a fixed coupon of 3.228%, an expected maturity of approximately eight years and a final maturity date in March 2045, the Series B Notes have a fixed coupon of 4.212%, an expected maturity of approximately eight years and a final maturity date in March 2045 and the Series C Notes have a fixed coupon of 6.657%, an expected maturity of approximately eight years and a final maturity date in March 2045. The Series A Notes were issued at a price of 99.99859% of par, the Series B Notes were issued at a price of 99.99493% of par and the Series C Notes were issued at a price of 99.99918% of par. Principal on the WEST V Notes is payable monthly to the extent of available cash in accordance with a priority of payments included in the indenture for the WEST V Notes.
The assets of WEST V are not available to satisfy the Company’s obligations other than the obligations specific to WEST V. WEST V is consolidated for financial statement presentation purposes. WEST V’s ability to make distributions and pay dividends to the Company is subject to the prior payments of its debt and other obligations and WEST V’s maintenance of adequate reserves and capital. Under WEST V’s indenture, cash is collected in a restricted account, which is used to service the debt and any remaining amounts, after debt service and defined expenses, are distributed to the Company. Additionally, a portion of maintenance reserve payments and lease security deposits are formulaically accumulated in restricted accounts and are available to fund future maintenance events and to secure lease payments, respectively. The WEST V indenture requires that a minimum threshold of maintenance reserve and security deposit balances be held in restricted cash accounts.
We recognized a $4.7 million loss on debt extinguishment upon the repayment of the WEST II Series A 2012 term notes in March 2020.
30

Table of Contents
In October 2020, the Company entered into a Limited Waiver (the “Waiver”) to its Fourth Amended and Restated Credit Agreement. The Waiver provides for the partial exclusion for specified periods of certain asset book values in the calculation of customer concentration limits, as such limits are defined in the Amended Credit Agreement.
Virtually all of the above debt requires our ongoing compliance with the covenants of each financing, including debt/equity ratios, minimum tangible net worth and minimum interest coverage ratios, and other eligibility criteria including customer and geographic concentration restrictions. Under our revolving credit facility, we can typically borrow up to 85% of an engine’s net book value and 65% of spare part’s net book value. Therefore we must have other available funds for the balance of the purchase price of any new equipment to be purchased or we will not be permitted to draw on our revolver. The facilities are also cross-defaulted against other facilities. If we do not comply with the covenants or eligibility requirements, we may not be permitted to borrow additional funds and accelerated payments may become necessary. Additionally, much of the above debt is secured by engines and aircraft to the extent that engines or aircraft are sold, repayment of that portion of the debt could be required.
At December 31, 2021, we were in compliance with the covenants specified in the revolving credit facility, including the Interest Coverage Ratio requirement of at least 2.25 to 1.00, and the Total Leverage Ratio requirement to remain below 4.50 to 1.00. The Interest Coverage Ratio, as defined in the credit facility, is the ratio of earnings before interest, taxes, depreciation and amortization (EBITDA) and other one-time charges to consolidated interest expense. The Total Leverage Ratio, as defined in the credit facility, is the ratio of total indebtedness to tangible net worth. At December 31, 2021, we were in compliance with the covenants specified in the WEST III, WEST IV, WEST V and WEST VI indentures, servicing and other debt related agreements.
Contractual Obligation and Commitments
Repayments of our gross debt obligations primarily consist of scheduled installments due under term loans and are funded by the use of unrestricted cash reserves and from cash flows from ongoing operations. The table below summarizes our contractual commitments at December 31, 2021:

|  |  | Payment due by period (in thousands)
| Total |  | Less than 1 Year |  | 1-3 Years |  | 3-5 Years |  | More than 5 Years
Debt obligations | $ | 1,809,620 |  |  | $ | 79,726 |  |  | $ | 715,305 |  |  | $ | 341,030 |  |  | $ | 673,559 |
Interest payments under debt obligations | 279,018 |  |  | 60,050 |  |  | 106,143 |  |  | 75,882 |  |  | 36,943 |
Operating lease obligations | 5,932 |  |  | 1,071 |  |  | 1,716 |  |  | 1,583 |  |  | 1,562 |
Purchase obligations | 439,917 |  |  | 127,697 |  |  | 241,220 |  |  | 71,000 |  |  | — |
Total | $ | 2,534,487 |  |  | $ | 268,544 |  |  | $ | 1,064,384 |  |  | $ | 489,495 |  |  | $ | 712,064 |

From time to time we enter into contractual commitments to purchase engines directly from original equipment manufacturers. As of the date of this report we have purchased three new LEAP-1B engines and are currently committed to purchasing 12 additional new LEAP-1B engines for $170.6 million and 19 additional new LEAP-1A engines for $269.3 million by 2025. Our purchase agreements generally contain terms that allow the Company to defer or cancel purchase commitments in certain situations. These deferrals or conversions would not result in penalties or increased costs other than any potential increase due to the normal year-over-year change in engine list prices, which is akin to ordinary inflation. The Company continues to expect demand for LEAP-1B engines to increase as the 737 Max continues to be re-certified and aircraft (and their installed engines) that have been parked and in storage for more than one year begin the technical process of returning to service.
In May 2021, we entered into a commitment for future maintenance services which are anticipated to cost $24.0 million by 2024.
In December 2020, we entered into definitive agreements for the purchase of 25 modern technology aircraft engines. As part of the purchase, we have committed to certain future overhaul and maintenance services which are anticipated to range between $73.8 million and $112.0 million by 2030.
$27.3 million of interest payments due under debt obligations, scheduled above, are estimated based upon by applying the interest rates applicable at December 31, 2021 to the remaining debt, adjusted for the estimated debt repayments identified in the table above. Actual interest payments made will vary due to actual changes in the rates for one-month LIBOR.
We believe our equity base, internally generated funds and existing debt facilities are sufficient to maintain our level of operations through 2022. A decline in the level of internally generated funds could result if the amount of equipment off-lease increases, there is a decrease in availability under our existing debt facilities, or there is a significant step-up in borrowing costs. Such decline would impair our ability to sustain our level of operations. We continue to discuss additions to our capital base with our commercial and
31

Table of Contents
investment banks. If we are not able to access additional capital, our ability to continue to grow our asset base consistent with historical trends will be impaired and our future growth limited to that which can be funded from internally generated capital.
MANAGEMENT OF INTEREST RATE EXPOSURE
At December 31, 2021, $590.0 million of our borrowings were on a variable rate basis at various interest rates tied to one-month LIBOR. Our equipment leases are generally structured at fixed rental rates for specified terms. Increases in interest rates could narrow or result in a negative spread between the rental revenue we realize under our leases and the interest rate that we pay under our borrowings. Historically, we have entered into interest rate derivative instruments to mitigate our exposure to interest rate risk and not to speculate or trade in these derivative products. As of December 31, 2021, we have five interest rate swap agreements. During the first quarter of 2021, the Company entered into four fixed-rate interest swap agreements, each having notional amounts of $100.0 million, two with remaining terms of 25 months and two with remaining terms of 49 months as of December 31, 2021. One interest rate swap agreement was entered into during 2019 which has a notional outstanding amount of $100.0 million with a remaining term of 30 months as of December 31, 2021. One interest rate swap agreement which the Company entered into in 2016 expired in April 2021. The net fair value of the swaps as of December 31, 2021 was $7.3 million, representing an asset of $8.0 million and a liability of $0.7 million. The net fair value of the interest rate swaps as of December 31, 2020 was $4.0 million, representing a liability.
We record derivative instruments at fair value as either an asset or liability. We have used derivative instruments (primarily interest rate swaps) to manage the risk of interest rate fluctuation. While substantially all our derivative transactions are entered into for the purposes described above, hedge accounting is only applied where specific criteria have been met and it is practicable to do so. In order to apply hedge accounting, the transaction must be designated as a hedge and the hedge relationship must be highly effective. The hedging instrument’s effectiveness is assessed utilizing regression analysis at the inception of the hedge and on at least a quarterly basis throughout its life. All of the transactions that we have designated as hedges are accounted for as cash flow hedges. The effective portion of the gain or loss on a derivative instrument designated as a cash flow hedge is reported as a component of other comprehensive income and is reclassified into earnings in the period during which the transaction being hedged affects earnings. The ineffective portion of these hedges flows through earnings in the current period. The hedge accounting for these derivative instrument arrangements increased interest expense by $2.4 million and $2.0 million for the years ended December 31, 2021 and 2020, respectively. This incremental adjustment for the swaps effective for hedge accounting was included in interest expense for the respective periods.
For any interest rate swaps that we enter into, we will be exposed to risk in the event of non-performance of the interest rate hedge counter-parties. We anticipate that we may hedge additional amounts of our floating rate debt in the future.
RELATED PARTY TRANSACTIONS
Joint Ventures
“Other revenue” on the Consolidated Statements of Income includes management fees earned of $2.1 million and $1.6 million during the years ended December 31, 2021 and 2020, respectively, related to the servicing of engines for the WMES lease portfolio.
During 2021, the Company sold two engines to WMES for $25.0 million. During 2020, the Company sold one note receivable to WMES for $8.4 million.
There were no engine or aircraft sales to CASC Willis during 2021 or 2020.
Other
On December 2, 2021, in a transaction approved by an independent committee, as well as the Audit Committee, of the Board of Directors, the Company purchased 60,000 shares of its common stock directly from the Company’s Chief Executive Officer (“CEO”), Charles F. Willis. The agreed and paid price per share was $35.43, the discounted volume weighted average price on December 2, 2021.
On October 1, 2021, the Board’s Independent Directors approved the payment of $0.2 million to the Company’s CEO, Charles F. Willis, for reimbursement of a club membership fee, as well as future payments of reasonable annual club dues.
During 2021, the Company paid approximately $27,000 of expenses payable to Mikchalk Lake, LLC, an entity in which our CEO retains an ownership interest. These expenses were for lodging and other business related services. These transactions were approved by the Board’s Independent Directors.
During 2020, the Board’s Independent Directors approved the Company’s agreement to a lease with our CEO in support of the Company’s marine vessel leasing business. That lease provides for a payment to our CEO of $750 per day for the use of his tender in support of our vessel lease to a third-party lessee. In addition, the Company purchased a hull insurance policy, for our CEO’s tender, at
32

Table of Contents
a rate of $6,800 per annum, plus a one-time subscriber fee of $695 to insure his tender while in the service of the Company’s vessel leasing business. The Company has paid a total of $41,250 and $9,750 during the years ended December 31, 2021 and 2020, respectively, for usage of the tender. On November 11, 2021, in a transaction approved by the Independent Compensation Committee, the Company purchased the tender for $0.5 million. Additionally, during 2020, our CEO was charged $4,000 for personal expenses while onboard the Company’s marine vessel.
During 2020, the Company’s CEO was charged $9,100 for the purchase of artwork from the Company.
ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Our primary market risk exposure is that of interest rate risk. A change in LIBOR rates would affect our cost of borrowing. Increases in interest rates, which may cause us to raise the implicit rates charged to our customers, could result in a reduction in demand for our leases. Alternatively, we may price our leases based on market rates so as to keep the fleet on-lease and suffer a decrease in our operating margin due to interest costs that we are unable to pass on to our customers. As of December 31, 2021, $590.0 million of our outstanding debt is variable rate debt. We estimate that for every 1% increase or decrease in interest rate, the annual interest expense for our variable rate debt, would increase or decrease $0.9 million compared to $5.8 million in 2020.
We hedge a portion of our borrowings from time to time, effectively fixing the rate of these borrowings. This hedging activity helps protect us against reduced margins on longer term fixed rate leases. Such hedging activities may limit our ability to participate in the benefits of any decrease in interest rates, but may also protect us from increases in interest rates. Furthermore, since lease rates tend to vary with interest rate levels, it is possible that we can adjust lease rates for the effect of change in interest rates at the termination of leases. Other financial assets and liabilities are at fixed rates.
We are also exposed to currency devaluation risk. During the years ended December 31, 2021 and 2020, respectively, 54% and 77% of our total lease rent revenues came from non-United States domiciled lessees. Substantially all of our leases require payment in U.S. dollars. If these lessees’ currency devalues against the U.S. dollar, the lessees could potentially encounter difficulty in making their lease payments.
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
The information required by this item is submitted as a separate section of this report beginning on page 40.
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.
ITEM 9A. CONTROLS AND PROCEDURES
(a)Evaluation of disclosure controls and procedures. Based on management’s evaluation (with the participation of our Chief Executive Officer (CEO) and Chief Financial Officer (CFO)), as of the end of the period covered by this report, our CEO and CFO have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act)), are effective to provide reasonable assurance that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and is accumulated and communicated to management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.
(b)Inherent Limitations on Controls. Management, including the CEO and CFO, does not expect that our disclosure controls and procedures will prevent or detect all errors and fraud. Any control system, no matter how well designed and operated, is based upon certain assumptions and can provide only reasonable, not absolute, assurance that its objectives will be met. Further, no evaluation of controls can provide absolute assurance that misstatements due to errors or fraud will not occur or that all control issues and instances of fraud, if any, within the Company have been detected. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs.
(c)Management’s Report on Internal Control over Financial Reporting. Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. Our internal control over financial reporting includes policies and procedures that: (a) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and dispositions of assets; (b) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and Board of Directors; and (c) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements. Our
33

Table of Contents
internal control over financial reporting is a process designed with the participation of our principal executive officer and principal financial officer or persons performing similar functions to provide reasonable assurance to our management and board of directors regarding the reliability of financial reporting and preparation of financial statements for external purposes in accordance with generally accepted accounted principles.
Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2021. In making this assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013). Based on this assessment our management believes that, as of December 31, 2021, our internal control over financial reporting is effective under those criteria.
Grant Thornton LLP, the independent registered public accounting firm that audited the Company’s 2021 consolidated financial statements included in this Annual Report, issued an audit report on the Company’s internal control over financial reporting. Grant Thornton’s audit report appears on page 41.
(d)Changes in internal control over financial reporting. There has been no change in our internal control over financial reporting during our fourth fiscal quarter ended December 31, 2021 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
ITEM 9B. OTHER INFORMATION
None.
PART III
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
We have adopted a Standards of Ethical Conduct Policy (the “Code of Ethics”) that applies to all directors and employees including our Chief Executive Officer, President, and Chief Financial Officer. The Code of Ethics is available on our website at www.willislease.com. If we make any substantive amendments to the Code of Ethics or grant any waiver from a provision of the code to our Chief Executive Officer, President and Chief Financial Officer, we will disclose the nature of the amendment or waiver on our investor relations page under the heading “Corporate Governance” on our website at www.willislease.com or in a report on Form 8-K.
The remainder of the information required by this item is incorporated by reference to our Proxy Statement.
ITEM 11. EXECUTIVE COMPENSATION
The information required by this item is incorporated by reference to our Proxy Statement.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
The information in Item 5 of this report regarding our Equity Compensation Plans is incorporated herein by reference. The remainder of the information required by this item is incorporated by reference to our Proxy Statement.
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
The information required by this item is incorporated by reference to our Proxy Statement.
ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES
The information required by this item is incorporated by reference to our Proxy Statement.
34

Table of Contents
PART IV
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a) (1) Financial Statements
The response to this portion of Item 15 is submitted as a separate section of this report beginning on page 48.
(a) (2) Financial Statement Schedules
Schedule II, Valuation Accounts, is submitted as a separate section of this report starting on page 80.
All other financial statement schedules have been omitted as the required information is not pertinent to the Registrant or is not material or because the required information is included in the Financial Statements and Notes thereto.
(a) (3),(b) and (c):Exhibits: The response to this portion of Item 15 is submitted below.
35

Table of Contents
EXHIBITS

Exhibit Number |  | Description |
3.1 |  | Certificate of Incorporation, dated March 12, 1998, as amended by the Certificate of Amendment of Certificate of Incorporation, dated May 6, 1998 (incorporated by reference to Exhibit 3.1 to our report on Form 10-K filed on March 31, 2009). |
3.2 |  | Bylaws, dated April 18, 2001 as amended by (1) Amendment to Bylaws, dated November 13, 2001, (2) Amendment to Bylaws, dated December 16, 2008, (3) Amendment to Bylaws, dated September 28, 2010, (4) Amendment to Bylaws, dated August 5, 2013 (incorporated by reference to Exhibit 3.1 to our report on Form 8-K filed on August 9, 2013), and (5) Amendment to Bylaws, dated October 7, 2016 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on October 18, 2016). |
4.1 |  | Rights Agreement dated as of September 24, 1999, by and between the Registrant and American Stock Transfer and Trust Company, as Rights Agent (incorporated by reference to Exhibit 4.1 to our report on Form 8-K filed on October 4, 1999). |
4.2 |  | Second Amendment to Rights Agreement dated as of December 15, 2005, by and between the Registrant and American Stock Transfer and Trust Company, as Rights Agent (incorporated by reference to Exhibit 4.5 to our report on Form 10-K filed on March 31, 2009). |
4.3 |  | Third Amendment to Rights Agreement dated as of September 30, 2008, by and between the Registrant and American Stock Transfer and Trust Company, as Rights Agent (incorporated by reference to Exhibit 4.6 to our report on Form 10-K filed on March 31, 2009). |
4.3.1 |  | Fourth Amendment to Rights Agreement dated August 27, 2018, by and between the Registrant and American Stock Transfer and Trust Company, as Rights Agent (incorporated by reference to Exhibit 4.3.1 to our report on Form 10-K filed on March 12, 2020). |
4.4 |  | Form of Certificate of Designations of the Registrant with respect to the Series I Junior Participating Preferred Stock (formerly known as “Series A Junior Participating Preferred Stock”) (incorporated by reference to Exhibit 4.7 to our report on Form 10-K filed on March 31, 2009). |
4.5 |  | Form of Amendment No. 1 to Certificate of Designations of the Registrant with respect to Series I Junior Participating Preferred Stock (incorporated by reference to Exhibit 4.8 to our report on Form 10-K filed on March 31, 2009). |
4.6 |  | Second Amended and Restated Certificate of Designations, Preferences, and Relative Rights and Limitations of Series A Cumulative Redeemable Preferred Stock dated as of September 25, 2017 (incorporated by reference to Exhibit 10.2 to our report on Form 8-K filed on September 28, 2017). |
4.7 |  | Description of Securities (incorporated by reference to Exhibit 4.7 to our report on Form 10-K filed March 12, 2020). |
4.8 |  | Certificate Eliminating Series I Junior Participating Preferred Stock of Willis Lease Finance Corporation dated as of October 7, 2016 (incorporated by reference to Exhibit 10.3 to our report on Form 8-K filed October 18, 2016). |
10.1† |  | Form of Indemnification Agreement entered into between the Registrant and its directors and officers (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on October 1, 2010). |
10.2† |  | Amended and Restated 2007 Stock Incentive Plan (incorporated by reference to the Registrant’s Proxy Statement for 2015 Annual Meeting of Stockholders filed on April 28, 2015). |
10.3† |  | Amended and Restated Employment Agreement between the Registrant and Charles F. Willis IV dated as of December 1, 2008 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on December 22, 2008). |
10.4† |  | Employment Agreement between the Registrant and Scott B. Flaherty dated May 20, 2016 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on May 25, 2016). |
10.5† |  | Employment Agreement between the Registrant and Dean M. Poulakidas dated March 31, 2013 (incorporated by reference to Exhibit 10.23 to our report on Form 8-K filed on June 19, 2013). |
10.6* |  | Trust Indenture dated as of September 14, 2012 among Willis Engine Securitization Trust II, Deutsche Bank Trust Company Americas, as trustee, the Registrant and Crédit Agricole Corporate and Investment Bank (incorporated by reference to Exhibit 10.14 to our report on Form 10-Q filed on November 9, 2012). |
10.7* |  | Security Trust Agreement dated as of September 14, 2012 by and among Willis Engine Securitization Trust II, Willis Engine Securitization (Ireland) Limited, the Engine Trusts listed on Schedule V thereto, each of the additional grantors referred to therein and from time to time made a party thereto and Deutsche Bank Trust Company Americas, as trustee (incorporated by reference to Exhibit 10.15 to our report on Form 10-Q filed on November 9, 2012). |
10.8* |  | Note Purchase Agreement dated as of September 6, 2012 by and among Willis Engine Securitization Trust II, the Registrant, Credit Agricole Securities (USA) Inc. and Goldman, Sachs & Co. (incorporated by reference to Exhibit 10.16 to our report on Form 10-Q filed on November 9, 2012). |
10.9* |  | Servicing Agreement dated as of September 17, 2012 between Willis Engine Securitization Trust II, the Registrant and the entities listed on Appendix A thereto (incorporated by reference to Exhibit 10.17 to our report on Form 10-Q filed on November 9, 2012). |
10.10* |  | Administrative Agency Agreement dated as of September 17, 2012 among Willis Engine Securitization Trust II, the Registrant, Deutsche Bank Trust Company Americas, as trustee, and the entities listed on Appendix A thereto (incorporated by reference to Exhibit 10.18 to our report on Form 10-Q filed on November 9, 2012). |

36

Table of Contents

10.11* |  | Third Amended and Restated Credit Agreement, dated as of April 20, 2016, among the Company, MUFG Union Bank, N.A. as administrative agent and security agent, and certain other lenders and financial institutions named therein (incorporated by reference to Exhibit 10.15 to our report on Form 10-Q filed on August 16, 2016). |
10.12† |  | Employment Agreement between the Company and Brian R. Hole dated January 14, 2016 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on February 16, 2016). |
10.13† |  | Employment Agreement between the Company and Austin C. Willis dated February 9, 2016 (incorporated by reference to Exhibit 10.2 to our report on Form 8-K filed on February 16, 2016). |
10.14 |  | Trust Amendment No. 2 dated as of September 9, 2016 to Amended and Restated Trust Agreement of Willis Engine Securitization Trust II dated as of September 14, 2012 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed September 20, 2016). |
10.15 |  | General Supplement 2016-1 dated as of September 9, 2016 to Trust Indenture dated as of September 14, 2012 (incorporated by reference to Exhibit 10.2 to our report on Form 8-K filed September 20, 2016). |
10.16 |  | Series A Preferred Stock Purchase Agreement dated as of October 11, 2016 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed October 18, 2016). |
10.17* |  | Asset Purchase Agreement dated as of August 4, 2017 between the Registrant and Willis Engine Structured Trust III. (incorporated by reference to Exhibit 10.20 to our report on Form 10-Q filed on November 9, 2017). |
10.18* |  | Security Trust Agreement dated as of August 4, 2017 among Willis Engine Structured Trust III, each Grantor referred to therein and from time to time made a party thereto and Deutsche Bank Trust Company Americas, as trustee (incorporated by reference to Exhibit 10.21 to our report on Form 10-Q filed on November 9, 2017). |
10.19* |  | Servicing Agreement dated as of August 4, 2017 among Willis Engine Structured Trust III, the Registrant and each Service Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.22 to our report on Form 10-Q filed on November 9, 2017). |
10.20* |  | Administrative Agency Agreement dated as of August 4, 2017 among Willis Engine Structured Trust III, the Registrant, Deutsche Bank Trust Company Americas, as trustee, and each Managed Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.23 to our report on Form 10-Q filed on November 9, 2017). |
10.21* |  | Revolving Credit Agreement dated as of August 4, 2017 among Willis Engine Structured Trust III, BNP Paribas and the Registrant (incorporated by reference to Exhibit 10.24 to our report on Form 10-Q filed on November 9, 2017). |
10.22* |  | Series A-2 Preferred Stock Purchase Agreement dated as of September 22, 2017 (incorporated by reference to Exhibit 10.1 to our report on Form 8-K filed on September 28, 2017). |
10.23* |  | General Terms Agreement No. CFM-1-1028985 dated December 22, 2017 between CFM International, Inc. and the Registrant (incorporated by reference to Exhibit 10.26 to our report on Form 10-K filed on March 15, 2018). |
10.24* |  | Letter Agreement No. 1 to GTA No. 1-1028985 dated December 22, 2017 between CFM International, Inc. and the Registrant (incorporated by reference to Exhibit 10.27 to our report on Form 10-K filed March 15, 2018). |
10.25* |  | General Terms Agreement No. GE-1-2299982290-2 dated May 26, 2010 by and amongst General Electric Company, GE Engine Services Distribution, LLC, the Registrant and WEST Engine Funding LLC (incorporated by reference to Exhibit 10.28 to our report on Form 10-K filed March 15, 2018). |
10.26* |  | Letter Agreement No. 3 to GTA No. 1-2299982290 dated December 22, 2017 between General Electric Corporation and the Registrant (incorporated by reference to Exhibit 10.29 to our report on Form 10-K filed March 15, 2018). |
10.27* |  | Amendment No. 2 to General Terms Agreement No. GE-1-2299982290-2 dated December 22, 2017 between General Electric Company and the Registrant (incorporated by reference to Exhibit 10.30 to our report on Form 10-K filed March 15, 2018). |
10.28* |  | Agreement by and between IAE International Aero Engines AG and the Registrant, dated March 16, 2018, to purchase spare engines (incorporated by reference to Exhibit 10.31 to our report on Form 10-Q filed May 10, 2018). |
10.29 |  | Redemption Agreement to purchase 294,787 shares of common stock dated as of March 29, 2018 between the Registrant and M3 Partners, LP (incorporated by reference to Exhibit 10.32 to our report on Form 10-Q filed May 10, 2018). |
10.30† |  | 2018 Stock Incentive Plan (incorporated by reference to the Registrant’s Proxy Statement for 2018 Annual Meeting of Stockholders filed on April 27, 2018). |
10.31* |  | Administrative Agency Agreement dated as of August 22, 2018 among Willis Engine Structured Trust IV, the Registrant, Deutsche Bank Trust Company Americas, as trustee, and each Managed Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.34 to our report on Form 10-Q filed November 7, 2018). |
10.32* |  | Asset Purchase Agreement dated as of August 22, 2018 between the Registrant and Willis Engine Structured Trust IV (incorporated by reference to Exhibit 10.35 to our report on Form 10-Q filed November 7, 2018). |
10.33* |  | Trust Indenture dated as of August 22, 2018 among Willis Engine Structured Trust IV, Deutsche Bank Trust Company Americas, as Trustee, the Registrant and Bank of America, N.A. (incorporated by reference to Exhibit 10.36 to our report on Form 10-Q filed November 7, 2018). |
10.34* |  | Revolving Credit Agreement dated as of August 22, 2018 among Willis Engine Structured Trust IV, Bank of America, N.A. and the Registrant (incorporated by reference to Exhibit 10.37 to our report on Form 10-Q filed November 7, 2018). |

37

Table of Contents

10.35* |  | Servicing Agreement dated as of August 22, 2018 among Willis Engine Structured Trust IV, the Registrant and each Service Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.38 to our report on Form 10-Q filed November 7, 2018). |
10.36* |  | Security Trust Agreement dated as of August 22, 2018 among Willis Engine Structured Trust IV, each Grantor referred to therein and from time to time made a party thereto and Deutsche Bank Trust Company Americas, as security trustee and operating bank (incorporated by reference to Exhibit 10.39 to our report on Form 10-Q filed November 7, 2018). |
10.37* |  | Amendment No. 1 to Agreement to Purchase Spare Engines, dated July 25, 2018, between IAE International Aero Engines AG and Willis Lease Finance Corporation (incorporated by reference to Exhibit 10.40 to our report on Form 10-Q filed November 7, 2018). |
10.38* |  | Amendment No. 2 to Agreement to Purchase Spare Engines, dated August 9, 2018, between IAE International Aero Engines AG and Willis Lease Finance Corporation (incorporated by reference to Exhibit 10.41 to our report on Form 10-Q filed November 7, 2018). |
10.39* |  | Trust Indenture dated as of August 4, 2017 among Willis Engine Structured Trust III, Deutsche Bank Trust Company Americas, as trustee, the Registrant and BNP Paribas (incorporated by reference to Exhibit 4.6 to our report on Form 10-Q filed on November 9, 2017). |
10.40* |  | Amendment No. 3 to Agreement to Purchase Spare Engines, dated March 22, 2019, between IAE International Aero Engines AG and Willis Lease Finance Corporation (incorporated by reference to Exhibit 10.43 to our report on Form 10-Q filed on May 8, 2019). |
10.41* |  | Amendment No. 4 to Agreement to Purchase Spare Engines, dated June 27, 2019, between IAE International Aero Engines AG and Willis Lease Finance Corporation (incorporated by reference to Exhibit 10.44 to our report on Form 10-Q filed on August 7, 2019). |
10.42* |  | Fourth Amended and Restated Credit Agreement, dated as of June 7, 2019, among the Company, MUFG Union Bank, Ltd. as administrative agent, MUFG Union Bank, N.A. as security agent, and certain other lenders and financial institutions named therein (incorporated by reference to Exhibit 10.44 to our report on Form 10-Q filed on August 7, 2019). |
10.43* |  | Letter Agreement No. 2 to GTA No. 1-1028985 dated December 12, 2019 between CFM International, Inc. and Willis Lease Finance Corporation (incorporated by reference to Exhibit 10.43 to our report on Form 10-K filed on March 12, 2020). |
10.44* |  | Amendment No. 1 to the Fourth Amended and Restated Credit Agreement and Amendment No. 5 to Security Agreement, dated as of December 13, 2019, among the Company, MUFG Union Bank, Ltd. as administrative agent, MUFG Union Bank, N.A. as security agent, and certain other lenders and financial institutions named therein (incorporated by reference to Exhibit 10.44 to our report on Form 10-K filed on March 12, 2020). |
10.45* |  | Amended and Restated Administrative Agency Agreement, dated as of March 3, 2020, among Willis Engine Structured Trust V, the Registrant, Deutsche Bank Trust Company Americas, as trustee, and each Managed Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.45 to our report on Form 10-Q filed May 6, 2020). |
10.46* |  | Asset Purchase Agreement, dated as of March 3, 2020, between the Registrant and Willis Engine Structured Trust V (incorporated by reference to Exhibit 10.46 to our report on Form 10-Q filed May 6, 2020). |
10.47* |  | Amended and Restated Trust Indenture, dated as of March 3, 2020 among Willis Engine Structured Trust V, Deutsche Bank Trust Company Americas, as Trustee, the Registrant, and Bank of America, N.A. (incorporated by reference to Exhibit 10.47 to our report on Form 10-Q filed May 6, 2020). |
10.48* |  | Revolving Credit Agreement, dated March 3, 2020, among Willis Engine Structured Trust V, Bank of America, N.A., and the Registrant (incorporated by reference to Exhibit 10.48 to our report on Form 10-Q filed May 6, 2020). |
10.49* |  | Amended and Restated Servicing Agreement, dated as of March 3, 2020, among Willis Engine Structured Trust V, the Registrant, and each Serviced Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.49 to our report on Form 10-Q filed May 6, 2020). |
10.50* |  | Amended and Restated Security Trust Agreement, dated as of March 3, 2020, among Willis Engine Structured Trust V, each Grantor referred to therein and from time to time made a party thereto and Deutsche Bank Trust Company Americas, as Security Trustee and Operating Bank (incorporated by reference to Exhibit 10.50 to our report on Form 10-Q filed May 6, 2020). |
10.51* |  | Excluded Property Purchase Agreement, dated as of March 3, 2020, among the Registrant, West Engine Acquisition LLC, and Willis Engine Structured Trust V (incorporated by reference to Exhibit 10.51 to our report on Form 10-Q filed May 6, 2020). |
10.52* |  | Agreement by and between International Aero Engines, LLC and the Registrant, dated March 27, 2020, to purchase spare engines (incorporated by reference to Exhibit 10.52 to our report on Form 10-Q filed May 6, 2020). |
10.53* |  | Letter Agreement No. 4 to GTA No. 1-2299982290 dated March 31, 2020 between General Electric Company and the Registrant (incorporated by reference to Exhibit 10.53 to our report on Form 10-Q filed May 6, 2020). |
10.54* |  | Used Engines Sales Agreement dated December 3, 2020 between Pratt & Whitney Engine Leasing, LLC and the Registrant (incorporated by reference to Exhibit 10.54 to our report on Form 10-K filed March 15, 2021). |
10.55* |  | Used Engine Sales Agreement dated December 3, 2020 between [*] Engine Leasing, LLC and the Registrant (incorporated by reference to Exhibit 10.55 to our report on Form 10-K filed March 15, 2021). |
10.56* |  | [*] Fixed Price Repair Agreement by and between the Registrant and Raytheon Technologies Corporation dated December 3, 2020 (incorporated by reference to Exhibit 10.56 to our report on Form 10-K filed March 15, 2021). |

38

Table of Contents

10.57* |  | [*] Fixed Price Repair Agreement by and between the Registrant and International Aero Engines, LLC dated December 3, 2020 (incorporated by reference to Exhibit 10.57 to our report on Form 10-K filed March 15, 2021). |
10.58# |  | Amendment No. 2 to Fourth Amended and Restated Credit Agreement, dated as of June 23, 2021, among the Registrant, MUFG Union Bank, Ltd., as administrative agent, MUFG Union Bank, Inc., as security agent, and certain other lenders and financial institutions named therein (incorp orated by reference to Exhibit 10.58 to our report on F or m 10-Q filed Augus t 8, 2021). |
10.59# |  | Administrative Agency Agreement, dated as of May 17, 2021, among Willis Engine Structured Trust VI, the Registrant, U.S. Bank National Association, as trustee, and each Managed Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.59 to our report on Form 10-Q filed August 8, 2021). |
10.60# |  | Asset Purchase Agreement, dated as of May 17, 2021, between the Registrant and Willis Engine Structured Trust VI (incorporated by reference to Exhibit 10.60 to our report on Form 10-Q filed August 8, 2021). |
10.61# |  | Trust Indenture, dated as of May 17, 2021, among Willis Engine Structured Trust VI, U.S. Bank National Association, as Trustee, the Registrant and Bank of America, N.A. (incorporated by reference to Exhibit 10.61 to our report on Form 10-Q filed August 8, 2021). |
10.62 |  | Revolving Credit Agreement, dated as of May 17, 2021, among Willis Engine Structured Trust VI, Bank of America, N.A. and the Registrant (incorporated by reference to Exhibit 10.62 to our report on Form 10-Q filed August 8, 2021). |
10.63 |  | Servicing Agreement, dated as of May 17, 2021, among Willis Engine Structured Trust VI, the Registrant and each Service Group Member referred to therein and from time to time made a party thereto (incorporated by reference to Exhibit 10.63 to our report on Form 10-Q filed August 8, 2021). |
10.64# |  | Security Trust Agreement, dated as of May 17, 2021, among Willis Engine Structured Trust VI, each Grantor referred to therein and from time to time made a party thereto and U.S. Bank National Association, as security trustee and operating bank (incorporated by reference to Exhibit 10.64 to our report on Form 10-Q filed August 8, 2021). |
16.1 |  | Letter from KPMG to the Securities and Exchange Commission dated January 8, 2021 (incorporated by reference to Exhibit 16.1 to our report on Form 8-K filed January 8, 2021). |
21.1 |  | Subsidiaries of the Registrant. |
23.1 |  | Consent of KPMG LLP. |
23.2 |  | Consent of Grant Thornton LLP. |
31.1 |  | Certification of Charles F. Willis, IV, pursuant to Section 1350 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
31.2 |  | Certification of Scott B. Flaherty, pursuant to Section 1350 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. |
32 |  | Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. |
101.INS |  | XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. |
101 |  | The following financial statements from the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, formatted in Inline XBRL: (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Redeemable Preferred Stock and Shareholders’ Equity, (v) Consolidated Statements of Cash Flows and (vi) Notes to Consolidated Financial Statements, tagged as blocks of text and including detailed tags. |
104 |  | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). |

________________________________________________________
* Certain portions of this exhibit have been redacted pursuant to an SEC order granting confidential treatment or constitute confidential information have been redacted in accordance with Regulation S-K, Item 601(b)(10).
# Portions of this exhibit have been omitted in accordance with Item 601(b)(10)(iv) of Regulation S-K.
† Indicates a management contract or compensatory plan or arrangement.
Financial Statements are submitted as a separate section of this report beginning on page 48.
ITEM 16. FORM 10-K SUMMARY
None.
39

Table of Contents
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, duly authorized officers and directors.

Dated: | March 14, 2022 |
|  | Willis Lease Finance Corporation
|  | By: | /s/ CHARLES F. WILLIS, IV
|  |  | Charles F. Willis, IV
|  |  | Chairman of the Board and
|  |  | Chief Executive Officer

Dated: |  | Title |  | Signature
Date: March 14, 2022 |  | Chief Executive Officer and Director |  | /s/ CHARLES F. WILLIS, IV
|  | (Principal Executive Officer) |  | Charles F. Willis, IV
Date: March 14, 2022 |  | Chief Financial Officer |  | /s/ SCOTT B. FLAHERTY
|  | (Principal Financial and Accounting Officer) |  | Scott B. Flaherty
Date: March 14, 2022 |  | Director |  | /s/ HANS JOERG HUNZIKER
|  |  |  | Hans Joerg Hunziker
Date: March 14, 2022 |  | Director |  | /s/ ROBERT J. KEADY
|  |  |  | Robert J. Keady
Date: March 14, 2022 |  | Director |  | /s/ RAE ANN MCKEATING
|  |  |  | Rae Ann McKeating
Date: March 14, 2022 |  | Director |  | /s/ AUSTIN C. WILLIS
|  |  |  | Austin C. Willis

40

Table of Contents
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Reports of Independent Registered Public Accounting Firm (Grant Thornton LLP, Cincinnati, OH Auditor Firm ID Number 248) | 42
Report of Independent Registered Public Accounting Firm (KPMG LLP, Fort Lauderdale, FL Auditor Firm ID Number 185) | 45
Consolidated Balance Sheets as of December 31, 2021 and December 31, 2020 | 46
Consolidated Statements of Income for the years ended December 31, 2021 and December 31, 2020 | 47
Consolidated Statements of Comprehensive Income for the years ended December 31, 2021 and December 31, 2020 | 48
Consolidated Statements of Redeemable Preferred Stock and Shareholders’ Equity for the years ended December 31, 2021 and December 31, 2020 | 49
Consolidated Statements of Cash Flows for the years ended December 31, 2021 and December 31, 2020 | 50
Notes to Consolidated Financial Statements | 51
Schedule II — Valuation Accounts | 75

41

Table of Contents
Reports of Independent Registered Public Accounting Firm
Board of Directors and Shareholders
Willis Lease Finance Corporation
Opinion on the financial statements
We have audited the accompanying consolidated balance sheet of Willis Lease Finance Corporation (a Delaware corporation) and subsidiaries (the “Company”) as of December 31, 2021, the related consolidated statements of income, comprehensive income, redeemable preferred stock and shareholders’ equity, and cash flows for the year then ended, and the related notes and financial statement schedule included under Item 15(a) (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021, and the results of its operations and its cash flows for the year then ended, in conformity with accounting principles generally accepted in the United States of America.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2021, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”), and our report dated March 14, 2022 expressed an unqualified opinion.
Basis for opinion
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audit included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audit provides a reasonable basis for our opinion.
Critical audit matter
The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relate.
Valuation of equipment held for operating lease
As described further in Notes 1(d) and 9 to the consolidated financial statements, the Company reviews its equipment held for operating lease (which is inclusive of certain failed sale-leaseback transactions classified as notes receivable), for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, and annually, for certain equipment held for operating lease. With respect to the annual review, indicators of impairment are identified by review of independent appraisals. If an indicator of impairment is identified, the Company performs an analysis of undiscounted forecasted cash flows over the life of the asset as compared to the asset book value. When an asset’s undiscounted forecasted cash flows are less than the book value, an impairment charge is recorded for the difference between carrying value and fair value. Fair value is determined by reference to independent appraisals, quoted market prices (e.g., an offer to purchase) and other factors considered relevant by the Company. As a result of the annual impairment test, the Company recorded impairment charges of $3.5 million for the year ended December 31, 2021. As of December 31, 2021, the balance of equipment held for operating lease and notes receivable was $2.0 billion and $115.5 million, respectively. We identified the valuation of equipment held for operating lease as a critical audit matter.
The principal considerations for our determination that the valuation of equipment held for operating lease is a critical audit matter are that subjective auditor judgment was required to evaluate: (i) the assumptions used by management engaged independent appraisers, including the accuracy of data provided to management’s specialist to determine the fair value; and (ii) the assumptions used by management to calculate the undiscounted future cash flows, including assumptions of estimated lease rates, maintenance revenues, remaining lease periods and sales proceeds.
42

Table of Contents
Our audit procedures related to the valuation of equipment held for operating lease included the following, among others:
•We evaluated the design and operating effectiveness of certain internal controls related to management’s review of the independent appraisers report, including the accuracy of data provided to management’s specialist and the review of assumptions used to determine undiscounted future cash flows.
•We evaluated management’s method for determining indicators of impairment, including the potential of management bias.
•We tested the annual impairment analysis as follows:
•Evaluated the completeness and accuracy of the population of assets included in the analysis;
•For a selection of assets, validated the relevant asset condition data that management provided to the independent appraisers;
•Evaluated the reasonableness of the following assumptions used in the undiscounted cash flows by comparing them to historical and Company specific data: estimated lease rates, maintenance revenues, remaining lease periods and sales proceeds;
•With the assistance of valuation professionals with specialized skills and knowledge, we: (i) evaluated the qualification of management engaged independent appraisers; and (ii) assessed the reasonableness of the methodologies used and appraised values determined by comparing a selection of appraised values to published industry benchmark values of comparable assets.
/s/ Grant Thornton LLP
We have served as the Company’s auditor since 2021.
Cincinnati, Ohio
March 14, 2022
43

Table of Contents
Board of Directors and Shareholders
Willis Lease Finance Corporation
Opinion on internal control over financial reporting
We have audited the internal control over financial reporting of Willis Lease Finance Corporation (a Delaware corporation) and subsidiaries (the “Company”) as of December 31, 2021, based on criteria established in the 2013 Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on criteria established in the 2013 Internal Control—Integrated Framework issued by COSO.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated financial statements of the Company as of and for the year ended December 31, 2021, and our report dated March 14, 2022 expressed an unqualified opinion on those financial statements.
Basis for opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and limitations of internal control over financial reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
/s/ Grant Thornton LLP
Cincinnati, Ohio
March 14, 2022
44

Table of Contents
Report of Independent Registered Public Accounting Firm
To the Shareholders and Board of Directors
Willis Lease Finance Corporation:
Opinion on the Consolidated Financial Statements
We have audited the accompanying consolidated balance sheet of Willis Lease Finance Corporation and subsidiaries (the Company) as of December 31, 2020, the related consolidated statements of income, comprehensive income, redeemable preferred stock and shareholders’ equity, and cash flows for the year then ended, and the related notes and financial statement Schedule II, Valuation Accounts (collectively, the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020, and the results of its operations and its cash flows for the year then ended, in conformity with U.S. generally accepted accounting principles.
Basis for Opinion
These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audit included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audit provides a reasonable basis for our opinion.
/s/ KPMG LLP
We have not been able to determine the specific year that we began serving as the Company’s auditor; however, we are aware that we have served as the Company’s auditor since at least 1991 through 2021.
Fort Lauderdale, Florida
March 15, 2021
45

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Consolidated Balance Sheets
(In thousands, except per share data)

| December 31, 2021 |  | December 31, 2020
ASSETS |  |  |
Cash and cash equivalents | $ | 14,329 |  |  | $ | 42,540 |
Restricted cash | 81,312 |  |  | 36,385 |
Equipment held for operating lease, less accumulated depreciation of $524,968 and $454,123 at December 31, 2021 and 2020, respectively | 1,991,368 |  |  | 1,886,613 |
Maintenance rights | 22,511 |  |  | 20,097 |
Equipment held for sale | 6,952 |  |  | 2,850 |
Receivables, net of allowances of $1,154 and $1,372 at December 31, 2021 and 2020, respectively | 39,623 |  |  | 28,269 |
Spare parts inventory | 50,959 |  |  | 59,434 |
Investments | 55,927 |  |  | 53,275 |
Property, equipment & furnishings, less accumulated depreciation of $13,484 and $11,356 at December 31, 2021 and 2020, respectively | 31,327 |  |  | 31,753 |
Intangible assets, net | 1,188 |  |  | 1,246 |
Notes receivable | 115,456 |  |  | 158,708 |
Other assets | 51,975 |  |  | 43,778 |
Total assets (1) | $ | 2,462,927 |  |  | $ | 2,364,948 |
LIABILITIES, REDEEMABLE PREFERRED STOCK AND SHAREHOLDERS’ EQUITY |  |  |
Liabilities: |  |  |
Accounts payable and accrued expenses | $ | 26,858 |  |  | $ | 26,977 |
Deferred income taxes | 124,332 |  |  | 116,838 |
Debt obligations | 1,790,264 |  |  | 1,693,753 |
Maintenance reserves | 65,976 |  |  | 82,484 |
Security deposits | 19,349 |  |  | 19,522 |
Unearned revenue | 10,458 |  |  | 11,637 |
Total liabilities (2) | 2,037,237 |  |  | 1,951,211 |
Redeemable preferred stock ($0.01 par value, 2,500 shares authorized; 2,500 shares issued and outstanding at December 31, 2021 and 2020, respectively) | 49,805 |  |  | 49,722 |
Shareholders’ equity: |  |  |
Common stock ($0.01 par value, 20,000 shares authorized; 6,531 and 6,570 shares issued at December 31, 2021 and 2020, respectively) | 65 |  |  | 66 |
Paid-in capital in excess of par | 15,401 |  |  | 13,696 |
Retained earnings | 355,388 |  |  | 355,370 |
Accumulated other comprehensive income (loss), net of income tax expense (benefit) of $1,469 and $(1,428) at December 31, 2021 and 2020, respectively. | 5,031 |  |  | (5,117) |
Total shareholders’ equity | 375,885 |  |  | 364,015 |
Total liabilities, redeemable preferred stock and shareholders’ equity | $ | 2,462,927 |  |  | $ | 2,364,948 |

________________________________________________________
(1)Total assets at December 31, 2021 and 2020 include the following assets of variable interest entity’s (“VIE’s”) that can only be used to settle the liabilities of the VIE’s: Restricted cash $81,312 and $35,262; Equipment $1,226,395 and $1,037,684; Maintenance rights $5,433 and $767; Inventory $4,367 and $5,437; Notes receivable $90,868 and $26,392; and Other assets $4,775 and $558, respectively.
(2)Total liabilities at December 31, 2021 and 2020 include the following liabilities of VIEs for which the VIEs' creditors do not have recourse to Willis Lease Finance Corporation: Debt obligations $1,197,922 and $907,550, respectively.
See accompanying notes to the consolidated financial statements.
46

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Consolidated Statements of Income
(In thousands, except per share data)

| Years Ended December 31,
| 2021 |  | 2020
REVENUE |  |  |
Lease rent revenue | $ | 134,831 |  |  | $ | 142,895 |
Maintenance reserve revenue | 73,961 |  |  | 105,365 |
Spare parts and equipment sales | 17,417 |  |  | 18,625 |
Gain on sale of leased equipment | 5,975 |  |  | 3,391 |
Gain on sale of financial assets | 10,874 |  |  | — |
Asset transition fee | 6,256 |  |  | — |
Other revenue | 24,888 |  |  | 18,416 |
Total revenue | 274,202 |  |  | 288,692 |
EXPENSES |  |  |
Depreciation and amortization expense | 90,504 |  |  | 94,541 |
Cost of spare parts and equipment sales | 14,927 |  |  | 16,762 |
Write-down of equipment | 7,715 |  |  | 20,540 |
General and administrative | 75,350 |  |  | 67,910 |
Technical expense | 9,381 |  |  | 6,533 |
Net finance costs: |  |  |
Interest expense | 67,985 |  |  | 63,024 |
Loss on debt extinguishment | — |  |  | 4,688 |
Total net finance costs | 67,985 |  |  | 67,712 |
Total expenses | 265,862 |  |  | 273,998 |
Earnings from operations | 8,340 |  |  | 14,694 |
Earnings from joint ventures | 800 |  |  | 2,642 |
Income before income taxes | 9,140 |  |  | 17,336 |
Income tax expense | 5,788 |  |  | 7,588 |
Net income | 3,352 |  |  | 9,748 |
Preferred stock dividends | 3,251 |  |  | 3,259 |
Accretion of preferred stock issuance costs | 83 |  |  | 84 |
Net income attributable to common shareholders | $ | 18 |  |  | $ | 6,405 |
Basic weighted average earnings per common share: | $ | — |  |  | $ | 1.07 |
Diluted weighted average earnings per common share: | $ | — |  |  | $ | 1.05 |
Basic weighted average common shares outstanding | 6,112 |  |  | 5,963 |
Diluted weighted average common shares outstanding | 6,346 |  |  | 6,128 |

See accompanying notes to the consolidated financial statements.
47

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Consolidated Statements of Comprehensive Income
(In thousands)

| Years Ended December 31,
| 2021 |  | 2020
Net income | $ | 3,352 |  |  | $ | 9,748 |
Other comprehensive income (loss): |  |  |
Currency translation adjustment | 398 |  |  | 1,018 |
Unrealized gain (loss) on derivative instruments | 11,250 |  |  | (2,298) |
Unrealized gain (loss) on derivative instruments at joint venture | 1,454 |  |  | (1,121) |
Net gain (loss) recognized in other comprehensive income | 13,102 |  |  | (2,401) |
Tax (expense) benefit related to items of other comprehensive income (loss) | (2,954) |  |  | 532 |
Other comprehensive income (loss) | 10,148 |  |  | (1,869) |
Total comprehensive income | $ | 13,500 |  |  | $ | 7,879 |

See accompanying notes to the consolidated financial statements.
48

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Consolidated Statements of Redeemable Preferred Stock and Shareholders’ Equity
Years Ended December 31, 2021 and 2020
(In thousands, except per share data)

|  |  |  |  |  | Shareholders' Equity
|  | Redeemable |  |  |  |  |  |  |  |  |  | Accumulated Other |  |
|  | Preferred Stock |  | Common Stock |  | Paid-in Capital in |  | Retained |  | Comprehensive |  | Total Shareholders’
|  | Shares |  | Amount |  | Shares |  | Amount |  | Excess of par |  | Earnings |  | (Loss) Income |  | Equity
Balances at December 31, 2019 |  | 2,500 |  |  | $ | 49,638 |  |  | 6,356 |  |  | $ | 64 |  |  | $ | 4,557 |  |  | $ | 348,965 |  |  | $ | (3,248) |  |  | $ | 350,338 |
Net income |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9,748 |  |  | — |  |  | 9,748 |
Net unrealized gain from currency translation adjustment, net of tax expense of $225 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 793 |  |  | 793 |
Net unrealized loss from derivative instruments, net of tax benefit of $757 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (2,662) |  |  | (2,662) |
Shares repurchased |  | — |  |  | — |  |  | (56) |  |  | — |  |  | (1,510) |  |  | — |  |  | — |  |  | (1,510) |
Shares issued under stock compensation plans |  | — |  |  | — |  |  | 331 |  |  | 3 |  |  | 425 |  |  | — |  |  | — |  |  | 428 |
Cancellation of restricted stock units in satisfaction of withholding tax |  | — |  |  | — |  |  | (61) |  |  | (1) |  |  | (1,154) |  |  | — |  |  | — |  |  | (1,155) |
Stock-based compensation, net of forfeitures |  | — |  |  | — |  |  | — |  |  | — |  |  | 11,378 |  |  | — |  |  | — |  |  | 11,378 |
Accretion of preferred shares issuance costs |  | — |  |  | 84 |  |  | — |  |  | — |  |  | — |  |  | (84) |  |  | — |  |  | (84) |
Preferred stock dividends ($1.30 per share) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3,259) |  |  | — |  |  | (3,259) |
Balances at December 31, 2020 |  | 2,500 |  |  | 49,722 |  |  | 6,570 |  |  | 66 |  |  | 13,696 |  |  | 355,370 |  |  | (5,117) |  |  | 364,015 |
Net income |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3,352 |  |  | — |  |  | 3,352 |
Net unrealized gain from currency translation adjustment, net of tax expense of $89 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 309 |  |  | 309 |
Net unrealized gain from derivative instruments, net of tax expense of $2,865 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 9,839 |  |  | 9,839 |
Shares repurchased |  | — |  |  | — |  |  | (268) |  |  | (3) |  |  | (10,083) |  |  | — |  |  | — |  |  | (10,086) |
Shares issued under stock compensation plans |  | — |  |  | — |  |  | 346 |  |  | 3 |  |  | 183 |  |  | — |  |  | — |  |  | 186 |
Cancellation of restricted stock in satisfaction of withholding tax |  | — |  |  | — |  |  | (117) |  |  | (1) |  |  | (4,973) |  |  | — |  |  | — |  |  | (4,974) |
Stock-based compensation, net of forfeitures |  | — |  |  | — |  |  | — |  |  | — |  |  | 16,578 |  |  | — |  |  | — |  |  | 16,578 |
Accretion of preferred shares issuance costs |  | — |  |  | 83 |  |  | — |  |  | — |  |  | — |  |  | (83) |  |  | — |  |  | (83) |
Preferred stock dividends ($1.30 per share) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (3,251) |  |  | — |  |  | (3,251) |
Balances at December 31, 2021 |  | 2,500 |  |  | $ | 49,805 |  |  | 6,531 |  |  | $ | 65 |  |  | $ | 15,401 |  |  | $ | 355,388 |  |  | $ | 5,031 |  |  | $ | 375,885 |

See accompanying notes to the consolidated financial statements.
49

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Consolidated Statements of Cash Flows
(In thousands)

| Years Ended December 31,
| 2021 |  | 2020
Cash flows from operating activities: |  |  |
Net income | $ | 3,352 |  |  | $ | 9,748 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization expense | 90,504 |  |  | 94,541 |
Write-down of equipment | 7,715 |  |  | 20,540 |
Stock-based compensation expenses | 16,578 |  |  | 11,378 |
Amortization of deferred costs | 5,016 |  |  | 5,140 |
Allowances and provisions | (164) |  |  | 5 |
Gain on sale of leased equipment | (5,975) |  |  | (3,391) |
Income from joint ventures | (800) |  |  | (2,642) |
(Gain) Loss on sale of note receivable | (10,874) |  |  | 79 |
Loss (Gain) on disposal of property, equipment and furnishings | 44 |  |  | (9) |
Loss on debt extinguishment | — |  |  | 4,688 |
Deferred income taxes | 4,193 |  |  | 6,953 |
Changes in assets and liabilities: |  |  |
Receivables | (11,191) |  |  | (4,215) |
Distributions received from joint ventures | — |  |  | 7,200 |
Inventory | 7,923 |  |  | 7,026 |
Other assets | (787) |  |  | (16,252) |
Accounts payable and accrued expenses | 58 |  |  | (18,441) |
Maintenance reserves | (17,582) |  |  | (24,386) |
Security deposits | 3,827 |  |  | (1,166) |
Unearned revenue | (1,179) |  |  | (3,352) |
Net cash provided by operating activities | 90,658 |  |  | 93,444 |
Cash flows from investing activities: |  |  |
Proceeds from sale of equipment (net of selling expenses) | 37,626 |  |  | 26,078 |
Proceeds from sale of note receivable (net of selling expenses) | 58,363 |  |  | 8,431 |
Issuance of notes receivable | (44,444) |  |  | (136,583) |
Payments received on notes receivable | 8,404 |  |  | 7,630 |
Purchase of equipment held for operating lease and for sale | (205,779) |  |  | (409,250) |
Purchase of property, equipment and furnishings | (2,165) |  |  | (2,976) |
Net cash used in investing activities | (147,995) |  |  | (506,670) |
Cash flows from financing activities: |  |  |
Proceeds from issuance of debt obligations | 513,700 |  |  | 973,200 |
Debt issuance costs | (4,556) |  |  | (6,065) |
Principal payments on debt obligations | (416,966) |  |  | (530,783) |
Debt prepayment costs | — |  |  | (2,373) |
Proceeds from shares issued under stock compensation plans | 186 |  |  | 428 |
Repurchase of common stock | (10,086) |  |  | (1,510) |
Preferred stock dividends | (3,251) |  |  | (3,259) |
Cancellation of restricted stock units in satisfaction of withholding tax | (4,974) |  |  | (1,155) |
Net cash provided by financing activities | 74,053 |  |  | 428,483 |
Increase in cash, cash equivalents and restricted cash | 16,716 |  |  | 15,257 |
Cash, cash equivalents and restricted cash at beginning of period | 78,925 |  |  | 63,668 |
Cash, cash equivalents and restricted cash at end of period | $ | 95,641 |  |  | $ | 78,925 |
Supplemental disclosures of cash flow information: |  |  |
Net cash paid for: |  |  |
Interest | $ | 50,291 |  |  | $ | 54,339 |
Income Taxes | $ | 1,412 |  |  | $ | 510 |
Supplemental disclosures of non-cash activities: |  |  |
Liabilities assumed in purchase of equipment held for operating lease | $ | — |  |  | $ | 8,868 |
Transfers from Equipment held for operating lease to Equipment held for sale | $ | 13,368 |  |  | $ | 2,800 |
Transfers from Equipment held for operating lease to Spare parts inventory | $ | 4,467 |  |  | $ | 24,702 |
Transfers from Spare parts inventory to Equipment held for operating lease | $ | 1,555 |  |  | $ | — |
Transfers from Notes receivable to Equipment held for operating lease | $ | 27,804 |  |  | $ | — |
Accretion of preferred stock issuance costs | $ | 83 |  |  | $ | 84 |

See accompanying notes to the consolidated financial statements.
50

Table of Contents
WILLIS LEASE FINANCE CORPORATION
AND SUBSIDIARIES
Notes to Consolidated Financial Statements
1. Organization and Summary of Significant Accounting Policies
Unless the context requires otherwise, references to the “Company”, “WLFC”, “we”, “us” or “our” in these consolidated financial statements on Form 10-K refer to Willis Lease Finance Corporation and its subsidiaries.
(a)Organization
Willis Lease Finance Corporation with its subsidiaries is a provider of aviation services whose primary focus is providing operating leases of commercial aircraft, aircraft engines and other aircraft-related equipment to air carriers, manufacturers and overhaul/repair facilities worldwide. The Company also engages in the selective purchase and resale of commercial aircraft engines.
Willis Aeronautical Services, Inc. (“Willis Aero”) is a wholly-owned subsidiary whose primary focus is the sale of aircraft engine parts and materials through the acquisition or consignment of aircraft engines.
Willis Asset Management Limited (“Willis Asset Management”) is a wholly-owned subsidiary whose primary focus is the engine management and consulting business.
Willis Engine Securitization Trust III (“WEST III” or the “WEST III Notes”) is a bankruptcy remote special purpose vehicle which was established for the purpose of financing aircraft engines through an asset-backed securitization (“ABS”), of which the Company is the sole beneficiary. WEST III is a variable interest entity (“VIE”) which the Company owns 100% of the interest and consolidates in its financial statements.
Willis Engine Securitization Trust IV (“WEST IV” or the “WEST IV Notes”) is a bankruptcy remote special purpose vehicle which was established for the purpose of financing aircraft engines through an ABS, of which the Company is the sole beneficiary. WEST IV is a VIE which the Company owns 100% of the interest and consolidates in its financial statements.
In March 2020, the Company and its direct, consolidated VIE Willis Engine Structured Trust V (“WEST V”) (formerly Willis Engine Securitization Trust II), closed its offering of $366.2 million aggregate principal amount of fixed rate notes (the “WEST V Notes”). The WEST V Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $303.0 million, the Series B Notes issued in an aggregate principal amount of $42.1 million and the Series C Notes issued in an aggregate principal amount of $21.1 million.
In May 2021, the Company and its direct, consolidated VIE Willis Engine Structured Trust VI (“WEST VI”), closed its offering of $336.7 million aggregate principal amount of fixed rate notes (the “WEST VI Notes”). The WEST VI Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $278.6 million, the Series B Notes issued in an aggregate principal amount of $38.7 million and the Series C Notes issued in an aggregate principal amount of $19.4 million.
Principal and interest on the WEST III, WEST IV, WEST V and WEST VI Notes are payable monthly to the extent of available cash in accordance with a priority of payments included in the respective indenture agreements.
The WEST III, WEST IV, WEST V and WEST VI Notes are secured by, among other things, the respective ABS’s direct and indirect interests in a portfolio of assets. The WEST III, WEST IV, WEST V and WEST VI Notes have scheduled amortizations and are payable solely from revenue received from the engines and the engine leases, after payment of certain expenses of the respective ABS. The assets of WEST III, WEST IV, WEST V and WEST VI are not available to satisfy the Company’s obligations other than the obligations specific to the respective ABS. WEST III, WEST IV, WEST V and WEST VI are consolidated for financial statement presentation purposes, with the respective assets and liabilities on the Company’s balance sheet. The ABS’ ability to make distributions and pay dividends to the Company is subject to the prior payments of its debt and other obligations and maintenance of adequate reserves and capital. Under each ABS, cash is collected in a restricted account, which is used to service the debt and any remaining amounts, after debt service and defined expenses, are distributed to the Company. Additionally, a portion of the maintenance reserve payments and lease security deposits are formulaically accumulated in restricted accounts and are available to fund future maintenance events and to secure lease payments, respectively.
Additionally, in connection with WEST III, WEST IV, WEST V and WEST VI, the Company entered into servicing agreements and administrative agency agreements to provide certain engine, lease management and reporting functions in return for fees based on a percentage of collected lease revenues and asset sales. Because WEST III, WEST IV, WEST V and WEST VI are consolidated for financial statement reporting purposes, all fees eliminate upon consolidation.
51

Table of Contents
(b)Basis of Presentation and Principles of Consolidation
The accompanying consolidated financial statements include the accounts of WLFC and its wholly owned subsidiaries, including VIEs where the Company is the primary beneficiary, in accordance with consolidation guidance. The Company first evaluates all entities in which it has an economic interest to determine whether for accounting purposes the entity is either a VIE or voting interest entity. If the entity is a VIE, the Company consolidates the financial statements of that entity if it is the primary beneficiary of such entities’ activities. If the entity is a voting interest entity, the Company consolidates the entity when it has a majority of voting interests in such entity. Intercompany transactions and balances have been eliminated in consolidation.
(c)Revenue Recognition
Leasing revenue
Revenue from leasing of engines, aircraft and related parts and equipment is recognized as operating lease revenue on a straight-line basis over the terms of the applicable lease agreements. Revenue is not recognized when cash collection is not reasonably assured. When collectability is not reasonably assured, the customer is placed on non-accrual status and revenue is recognized when cash payments are received.
Under the terms of some of the Company’s leases, the lessees pay use fees (also known as maintenance reserves) to the Company based on usage of the leased asset, which are designed to cover expected future maintenance costs. Some of these amounts are reimbursable to the lessee if they make specifically defined maintenance expenditures. Use fees received are recognized in revenue as maintenance reserve revenue if they are not reimbursable to the lessee. Use fees that are reimbursable are recorded as a maintenance reserve liability until they are reimbursed to the lessee, the lease terminates, or the obligation to reimburse the lessee for such reserves ceases to exist, at which time they are recognized in revenue as maintenance reserve revenue.
Certain lessees may be significantly delinquent in their rental payments and may default on their lease obligations. As of December 31, 2021, the Company had an aggregate of approximately $6.8 million in lease rent and $4.1 million in maintenance reserve receivables more than 30 days past due. Inability to collect receivables or to repossess engines or other leased equipment in the event of a default by a lessee could have a material adverse effect on the Company. The Company estimates an allowance for doubtful accounts for receivables it does not consider fully collectible. The allowance for doubtful accounts includes the following: (1) specific reserves for receivables which are impaired for which management believes full collection is doubtful; and (2) a general reserve for estimated losses based on historical experience.
One customer accounted for more than 10% of total lease rent revenue during the year ended December 31, 2021 and 2020, respectively.
Gain on sale of leased equipment
The Company regularly sells equipment from its lease portfolio. This equipment may or may not be subject to a lease at the time of sale. The net gain or loss on such sales is recognized as revenue and consists of proceeds associated with the sale less the net book value of the asset sold and any direct costs associated with the sale. To the extent that deposits associated with the equipment are not included in the sale, any such amount is included in the calculation of gain or loss.
Spare parts sales
The Spare Parts Sales reportable segment primarily engages in the sale of aircraft engine parts and materials through the acquisition or consignment of engines from third parties or the Company’s leasing operations. The parts are sold at a fixed price with no right of return. In determining the performance obligation, management has identified the promise in the contract to be the shipment of the spare parts to the customer. Title passes to the buyer when the goods are shipped, and the buyer is responsible for any loss in transit, and the Company has a legal right to payment for the spare parts. Management has determined that physical acceptance of the spare parts to be a formality in accordance with Accounting Standards Codification (“ASC”) 606-10-5-86.
The spare parts transaction price is a fixed dollar amount and is stated on each purchase order for a fixed amount by total number of parts. Spare parts revenue is based on a set price for a set number of parts as defined in the purchase order. The performance obligation is completed once the parts have shipped and, as a result, all of the transaction price is allocated to that performance obligation. Management has determined that it is appropriate for the Company to recognize spare parts sales at a point in time (i.e., the date the parts are shipped) under ASC 606.
Equipment Sales
Equipment sales represent the selective purchase and resale of commercial aircraft engines and other aircraft equipment. The Company and customer enter into an agreement which outlines the place and date of sale, purchase price, payment terms, condition of
52

Table of Contents
the asset, bill of sale, and the assignment of rights and warranties from the Company to the customer. Management has identified the promise in the equipment sale contract to be the transfer of ownership of the asset. Management believes the asset holds standalone value to the customer as it is not dependent on any other services for functionality purposes and therefore is distinct within the context of the contract and as described in ASC 606-10. As such, management has identified the transfer of the asset as the performance obligation. The transaction price is set at a fixed dollar amount per fixed quantity (number of assets) and is explicitly stated in each contract. Equipment sales revenue is based on a set price for a set number of assets, which is allocated to the performance obligation discussed above, in its entirety. The Company has determined the date of transfer to the customer to be the date the customer obtains control and title over the asset and the date which revenue is to be recognized and payment is due.
Managed Services
Managed services revenue predominantly represents fleet management and engine storage services which may be combined on a single contract with a customer. Fleet management services are performed for a stated fixed fee as agreed upon in the services agreement. Engine storage services are for a fixed monthly fee. For a contract containing more than one performance obligation, the allocation of the transaction price is generally performed on the basis of the relative stand-alone selling price of each distinct good or service in the contract. As each of the services provided within the contract have separate prices, the Company allocates the price to its related performance obligation described above. Management has determined each of the revenue elements contain performance obligations that are satisfied over time and therefore recognizes revenue over time in accordance with ASC 606-10-25-27. The Company utilizes the percentage-of-completion method (input method) for recognizing fleet management services and will calculate revenues based on labor hours incurred. Additionally, as is required by ASC 606-10-25-35, as circumstances change over time, the Company will update its measure of progress to reflect any changes in the outcome of the performance obligation. Engine storage services are recognized on a monthly basis utilizing the input method of days passed.
Amounts owed for managed services are typically billed upon contract completion. At December 31, 2021, unbilled revenue was $0.9 million and the Company expects the remaining revenue to be fully recognized by June 30, 2022. Additionally, managed services are presented within the Other revenue line in the Consolidated Statements of Income.
Other Revenue
Other revenue consists primarily of management fee income, lease administration fees, third party consignment commissions earned, service fee revenue, interest income on notes receivable related to failed sale-leasebacks where the Company was the buyer-lessor, and other discrete revenue items.
(d)Equipment Held for Operating Lease
Aircraft assets held for operating lease are stated at cost, less accumulated depreciation. Certain costs incurred in connection with the acquisition of aircraft assets are capitalized as part of the cost of such assets. Major overhauls paid for by the Company, which improve functionality or extend the original useful life, are capitalized and depreciated over the shorter of the estimated period to the next overhaul (“deferral method”) or the remaining useful life of the equipment. The Company does not accrue for planned major maintenance. The cost of overhauls of aircraft assets under long term leases, for which the lessee is responsible for maintenance during the period of the lease, are paid for by the lessee or from reimbursable maintenance reserves paid to the Company in accordance with the lease, and are not capitalized.
Based on specific aspects of the equipment, the Company generally depreciates engines on a straight-line basis over a 15-year period from the acquisition date to a 55% residual value. This methodology is believed to accurately reflect the Company’s typical holding period for the engine assets and that the residual value assumption reasonably approximates the selling price of the assets 15 years from the date of acquisition. The typical 15 year holding period is the estimated useful life of the Company’s engines based on its business model and plans, and represents how long the Company anticipates holding a newly acquired engine. The technical useful life of a new engine can be in excess of 25 years. The Company reviews the useful life and residual values of all engines periodically as demand changes to accurately depreciate the cost of equipment over the useful life of the engines.
The aircraft and airframes owned by the Company are generally depreciated on a straight-line basis over an estimated useful life of 13 to 20 years to a 15% to 17% residual value. The marine vessel owned by the Company is depreciated on a straight-line basis over an estimated useful life of 18 years to a 15% residual value. The other leased parts and related equipment owned by the Company are generally depreciated on a straight-line basis over an estimated useful life of 14 to 15 years to a 25% residual value.
53

Table of Contents
The following table disaggregates equipment held for operating lease by asset class (in thousands):

| As of December 31,
| 2021 |  | 2020
| Gross value | Accumulated depreciation | Net book value |  | Gross value | Accumulated depreciation | Net book value
| (in thousands)
Engines and related equipment | $ | 2,368,496 |  | $ | (515,442) |  | $ | 1,853,054 |  |  | $ | 2,238,160 |  | $ | (445,780) |  | $ | 1,792,380 |
Aircraft and airframes | 134,370 |  | (7,790) |  | 126,580 |  |  | 89,613 |  | (7,312) |  | 82,301 |
Marine vessel | 13,470 |  | (1,736) |  | 11,734 |  |  | 12,963 |  | (1,031) |  | 11,932 |
| $ | 2,516,336 |  | $ | (524,968) |  | $ | 1,991,368 |  |  | $ | 2,340,736 |  | $ | (454,123) |  | $ | 1,886,613 |

The useful life of older generation engines and aircraft may be significantly less based upon the technical status of the engine, as well as supply and demand factors. For these older generation engines and aircraft, the remaining useful life and the remaining expected holding period are typically the same. For older generation engines or aircraft that are unlikely to be repaired at the end of the current expected useful lives, the Company depreciates the engines or aircraft over their estimated lives to a residual value based on an estimate of the wholesale value of the parts after disassembly. As of December 31, 2021, 40 engines having a net book value of $37.0 million were depreciated under this policy with estimated useful lives ranging from 1 to 113 months. The Company adjusts its estimates annually for these older generation assets, including updating estimates of an engine’s or aircraft’s remaining operating life as well as future residual value expected from part-out based on the current technical status of the engine or aircraft.
The Company reviews its long-lived assets, including certain failed sale-leaseback transactions classified as notes receivable under ASC 842, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Long-lived assets to be disposed are reported at the lower of carrying amount or fair value less cost to sell. Impairment is identified by review of appraisals or by comparison of undiscounted forecasted cash flows, including estimated sales proceeds, over the life of the asset with the assets’ book value. If the undiscounted forecasted cash flows are less than the book value, the asset is written down to its fair value. Fair value is determined per individual asset by reference to independent appraisals, quoted market prices (e.g. an offer to purchase) and other factors considered relevant by the Company. The Company evaluates assets during the year if a triggering event is identified indicating impairment is possible and also conducts a formal annual review of the carrying value of long-lived assets. The formal annual review resulted in an impairment charge of $3.5 million and $4.9 million in 2021 and 2020, respectively. Additionally, the Company recorded an impairment charge of $4.2 million and $15.6 million in 2021 and 2020, respectively, as a result of triggering events occurring during the year. These write-downs are included in “Write-down of equipment” in the Consolidated Statements of Income.
(e)Equipment Held for Sale
Equipment held for sale includes assets being marketed for sale as well as third party consigned assets. The assets to be disposed are reported at the lower of carrying amount or fair value less costs to sell.
(f)Debt Issuance Costs and Related Fees
Fees paid in order to secure debt are capitalized, included in Debt obligations on the Consolidated Balance Sheets, and amortized over the life of the related loan using the effective interest method.
(g)Interest Rate Hedging
The Company enters into various derivative instruments periodically to mitigate the exposure on variable rate borrowings. The derivative instruments are fixed-rate interest swaps that are recorded at fair value as either an asset or liability.
While substantially all of the Company’s derivative transactions are entered into for the purposes described above, hedge accounting is only applied where specific criteria have been met and it is practicable to do so. In order to apply hedge accounting, the transaction must be designated as a hedge and it must be highly effective. The hedging instrument’s effectiveness is assessed utilizing regression analysis at the inception of the hedge and on at least a quarterly basis throughout its life. All of the transactions that the Company has designated as hedges are cash flow hedges. The effective portion of the change in fair value on a derivative instrument designated as a cash flow hedge is reported as a component of other comprehensive income and is reclassified into earnings in the period during which the transaction being hedged affects earnings. The ineffective portion of the hedges is recorded in earnings in the current period.
54

Table of Contents
(h)Income Taxes
The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred income taxes are recognized for the tax consequences of “temporary differences” by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. The effect on deferred taxes of a change in the tax rates is recognized in income in the period that includes the enactment date.
The Company recognizes in the financial statements the impact of a tax position, if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs (see Note 8).
The Company files income tax returns in various states and countries which may have different statutes of limitations. The Company records penalties and accrued interest related to uncertain tax positions in income tax expense. Such adjustments have historically been minimal and immaterial to our financial results.
(i)Property, Equipment and Furnishings
Property, equipment and furnishings are recorded at cost and depreciated using the straight-line method over the estimated useful lives of the related assets, which range from three to 39 years. Leasehold improvements are recorded at cost and depreciated by the straight-line method over the shorter of the lease term or useful life of the leasehold.
(j)Cash and Cash Equivalents
The Company considers highly liquid investments readily convertible into known amounts of cash, with original maturities of 90 days or less, as cash equivalents.
(k)Restricted Cash
The Company has certain bank accounts that are subject to restrictions in connection with its WEST III, WEST IV, WEST V and WEST VI notes payable. Under these borrowings cash is collected in restricted accounts, which are used to service the debt and any remaining amounts, after debt service and defined expenses, are distributed to the Company. Additionally, a portion of projected maintenance obligations and some or all of the lease security deposits are accumulated in restricted accounts and are available to fund future maintenance events and to secure lease payments, respectively. Under WEST III, cash equal to a portion of the projected maintenance obligations for the subsequent nine months is held in a restricted account and is subject to a minimum balance of $9.6 million. Under WEST IV, cash equal to a portion of the projected maintenance obligations for the subsequent ten months is held in a restricted account and is subject to a minimum balance of $4.7 million. Under WEST V, cash equal to a portion of the projected maintenance obligations for the subsequent twelve months is held in a restricted account and is subject to a minimum balance of $5.0 million. Under WEST VI, cash equal to a portion of the projected maintenance obligations for the subsequent twelve months is held in a restricted account and is subject to a minimum balance of $1.0 million. Under WEST III, WEST IV and WEST V, security deposits are held in restricted accounts equal to a portion of the security deposits for leases scheduled to terminate over the subsequent four months, in each case, subject to a minimum balance of $1.0 million. Under WEST VI, all security deposits for leases scheduled to terminate before the expected maturity date of the notes are held in a restricted account, subject to a minimum balance of $1.0 million. Provided lease return conditions have been met, these deposits will be returned to the lessee. To the extent return conditions are not met, these deposits may be retained by the Company.
(l)Spare Parts Inventory
Spare parts inventory consists of spare aircraft and engine parts purchased either directly by Willis Aero and also engines removed from the lease portfolio to be parted out. Spare parts inventory is stated at lower of cost or net realizable value. An impairment charge for excess or inactive inventory is recorded based upon an analysis that considers current inventory levels, historical usage patterns, future sales expectations and salvage value.
(m)Intangible Assets
Intangible assets include customer relationships and goodwill at Willis Asset Management. Intangible assets are accounted for in accordance with ASC 350, “Intangibles — Goodwill and Other.”
Customer relationships are amortized on a straight line basis over their estimated useful life of five years. Aside from goodwill, the Company has no intangible assets with indefinite useful lives. Goodwill is assessed for impairment annually.
55

Table of Contents
(n)Other assets
Other assets typically include prepaid purchase deposits and other prepaid expenses. As of December 31, 2021 and 2020, other assets included prepaid deposits of $8.5 million and $10.5 million, respectively, relating to commitments to purchase equipment.
(o)Management Estimates
These financial statements have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States.
The preparation of consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. Management evaluates estimates on an ongoing basis, including those related to residual values, estimated asset lives, impairments and bad debts. Estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
Management believes that the accounting policies on revenue recognition, maintenance reserves and expenditures, useful life of equipment, asset residual values, asset impairment and allowance for doubtful accounts are critical to the results of operations.
If the useful lives or residual values are lower than those estimated, upon sale of the asset a loss may be realized. Significant management judgment is required in the forecasting of future operating results, which are used in the preparation of projected undiscounted cash-flows and should different conditions prevail, material impairment write-downs may occur.
(p)Earnings per share information
Basic earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per common share is computed by dividing net income by the weighted average number of shares outstanding, adjusted for the dilutive effect of unvested restricted stock awards (“RSAs”). See Note 10 for more information on the computation of earnings per share.
(q)Investments
The Company’s investments are joint ventures, where it owns 50% of the equity of the ventures and are accounted for using the equity method of accounting. The investments are recorded at the amount invested plus or minus our 50% share of net income or loss, less any distributions or return of capital received from the entities.
(r)Stock Based Compensation
The Company recognizes stock based compensation expense in the financial statements for share-based awards based on the grant-date fair value of those awards. Stock based compensation expense is recognized over the requisite service periods of the awards on a straight-line basis, which is generally commensurate with the vesting term. Forfeitures are accounted for as they occur.
(s)Initial Direct Costs associated with Leases
The Company accounts for the initial direct costs, including sales commissions and legal fees, incurred in obtaining a new lease by deferring and amortizing those costs over the term of the lease. The amortization of these costs is recorded under general and administrative expenses in the Consolidated Statements of Income. The amounts amortized were $1.5 million for the years ended December 31, 2021 and 2020, respectively.
(t)Maintenance Rights
The Company identifies, measures and accounts for maintenance right assets and liabilities associated with acquisitions of equipment with in-place leases. A maintenance right asset represents the fair value of the contractual right under a lease to receive equipment in an improved maintenance condition as compared to the maintenance condition on the acquisition date. A maintenance right liability represents the Company’s obligation to pay the lessee for the difference between the lease-end contractual maintenance condition of the equipment and the actual maintenance condition of the equipment on the acquisition date. The equipment condition at the end of the lease term may result in either overhaul work being performed by the lessee to meet the required return condition or a financial settlement.
When a capital event is performed on the equipment by the lessee, which satisfies their maintenance right obligation, the maintenance rights are added to the equipment basis and depreciated to the next capital event. When equipment is sold before the end of the pre-existing lease, the maintenance rights are applied against any accumulated maintenance reserves, if paid by the lessee, and
56

Table of Contents
the remaining balance is applied to the disposition gain or loss. When a lease terminates, an end of lease true-up is performed and the maintenance right is applied against the accumulated maintenance reserves or, for non-reserve lessees the final settlement payment, and any remaining net maintenance right is recorded in the income statement.
(u)Foreign Currency Translation
The Company’s foreign investments have been converted at rates of exchange in effect at the balance sheet dates. The changes in exchange rates in our foreign investments reported under the equity method are included in stockholders’ equity as accumulated other comprehensive income.
(v)Risk Concentrations
Financial instruments which potentially subject us to concentrations of credit risk consist principally of cash deposits, lease receivables and interest rate swaps.
The Company places its cash deposits, which exceed federally insured limits, with financial institutions and other credit-worthy institutions, such as money market funds, and limits the amount of credit exposure to any one party. Management opts for security of principal as opposed to yield. Concentrations of credit risk with respect to lease receivables are limited due to the large number of customers comprising the customer base, and their dispersion across different geographic areas. Some lessees are required to make payments for maintenance reserves at the end of the lease however, this risk is considered limited due to the relatively few lessees which have this provision in the lease. The Company enters into interest rate swap agreements with counterparties that are investment grade financial institutions.
(w)Risks and Uncertainties
As a result of the COVID-19 pandemic, the Company has continued to temporarily close its headquarters and other offices, require its employees and contractors to predominately work remotely, and implement travel restrictions, all of which represent a significant disruption in how the Company operates its business. The Company has also taken various proactive actions in an attempt to mitigate the financial impact of the COVID-19 pandemic. During 2020, 9% of our employees were either furloughed, or subject to a form of reduced compensation which was subsequently reversed in 2021. The operations of the Company’s partners and customers have likewise been disrupted. The worldwide spread of the COVID-19 virus has resulted in a global slowdown of economic activity. While the duration and extent of the COVID-19 pandemic depends on future developments that cannot be accurately predicted at this time, such as the extent and effectiveness of containment actions, it has had an adverse effect on the global economy and the ultimate societal and economic impact of the COVID-19 pandemic remains unknown. In particular, the ongoing COVID-19 pandemic has caused significant disruptions to the airline industry and has resulted in a dramatic reduction in demand for air travel domestically and abroad, which is likely to continue for the foreseeable future. Lower demand for air travel in turn presents significant risks to the Company, resulting in impacts which have adversely affected the Company’s business, results of operation, and financial condition. Lower demand for spare parts and engine and airframe leasing has negatively impacted collections of accounts receivable, caused the Company’s lessee customers to not enter into new leases, resulted in reduced spending by new and existing customers for leases or spare parts or equipment, resulted in lower usage fees, caused some of the Company’s customers to go out of business, and limited the ability of the Company’s personnel to travel to customers and potential customers. The Company is not able to evaluate or foresee the full extent of these impacts at the current time. During the year ended December 31, 2021, the Company experienced declining lease rent revenue and maintenance reserve revenue as compared to the prior year. Additionally, as of December 31, 2021, the Company has, in certain situations, agreed to rent concessions which resulted in a total reduction to rent revenues of $0.5 million for the year ended December 31, 2021. Rent concessions for the year ended December 31, 2020 resulted in a total reduction of rent revenue of $6.5 million. The rent concessions provide lessees with payment deferral options or reduced rent, where the revised cash flows are substantially the same or less (i.e., the rights of the lessor and obligations of the lessee have not substantially increased) as the original lease agreements. There is no impact on the timing of revenue recognition for rent concessions that result in short term payment deferrals. The rent concessions with reduced rent qualify for the COVID-19 practical expedient to account for the rent concessions outside of the modification framework.
Other than what has been reflected in the Consolidated Financial Statements, the Company is not aware of any specific event or circumstance related to the COVID-19 pandemic that would require it to update its estimates or judgments or adjust the carrying value of its assets or liabilities. Actual results could differ from those estimates and any such differences may be material to the Consolidated Financial Statements.
(x)Recent Accounting Pronouncements
Recent Accounting Pronouncements Adopted by the Company
In December 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-12,
57

Table of Contents
“Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes” (“ASU 2019-12”). ASU 2019-12 simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. ASU 2019-12 also improves consistent application of and simplifies GAAP for other areas of Topic 740 by clarifying and amending existing guidance. The Company adopted this guidance effective January 1, 2021 and it did not impact our consolidated financial statements and related disclosures.
In March 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform (Topic 848), Scope”, which clarifies certain optional expedients to all derivatives affected by the discounting transition, regardless of whether the derivatives reference the London Interbank Offered Rate (“LIBOR”) or another rate expected to be discounted or whether the modification replaces or has the potential to replace the reference rate expected to be discounted. The amendments in this guidance are effective upon issuance through December 31, 2022. The Company adopted this guidance upon issuance. When the transition occurs, the Company expects to apply this expedient to its existing debt instruments and interest rate swaps that reference LIBOR, and to any other new transactions that reference LIBOR or another reference rate that is discontinued, through December 31, 2022. The adoption of this ASU did not impact the Company’s consolidated financial statements.
Recent Accounting Pronouncements To Be Adopted by the Company
In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 revises the measurement of credit losses for financial assets measured at amortized cost from an incurred loss methodology to an expected loss methodology. ASU 2016-13 affects trade receivables, debt securities, net investment in leases, and most other financial assets that represent a right to receive cash. Additional disclosures about significant estimates and credit quality are also required. In November 2018, the FASB issued ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments – Credit Losses.” This ASU clarifies receivables from operating leases are accounted for using the lease guidance and not as financial instruments. In April 2019, the FASB issued ASU 2019-04, “Codification Improvements to Topic 326, Financial Instruments – Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments.” This ASU clarifies various scoping and other issues arising from ASU 2016-13. In March 2020, the FASB issued ASU 2020-03, “Codification Improvements to Financial Instruments.” This ASU improves the Codification and amends the interaction of Topic 842 and Topic 326. The amendments in this ASU are effective for the Company on January 1, 2023, with early adoption permitted. The Company expects to adopt this accounting standard update effective January 1, 2023. The Company is evaluating the potential effects on the consolidated financial statements.
In July 2021, the FASB issued ASU 2021-05, “Lease (Topic 842): Lessors – Certain Leases with Variable Lease Payments” related to accounting for sales-type leases or direct financing leases with variable lease payments. This ASU is effective for interim and annual years beginning after December 15, 2021, with early adoption permitted. The Company plans to adopt this guidance effective January 1, 2022 on a prospective basis for sales-type leases entered into after the effective date and is currently evaluating the potential impact adoption will have on the consolidated financial statements and related disclosures.
In November 2021, the FASB issued ASU 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” related to disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy. This ASU is effective for annual periods beginning after December 15, 2021, with early application permitted. The Company plans to adopt this guidance effective January 1, 2022 on a prospective basis and is currently evaluating the potential impact adoption will have on the consolidated financial statements and related disclosures.
2. Leases
As lessor, and as of December 31, 2021, the majority of our leases were operating leases with the exception of certain failed sale-leaseback transactions classified as notes receivable under the guidance provided by ASC 842.
As lessee, the significant majority of leases the Company enters are for real estate (office and warehouse space for our operations as well as automobiles). These lease agreements do not contain any material residual value guarantees or material restrictive covenants. Leases with terms of 12 months or less are not recorded on the balance sheet; the Company recognizes lease expense for these leases on a straight-line basis over the lease term. Some of the Company’s leases include variable non-lease components (e.g., taxes) which are not separated from associated lease components (e.g. fixed rent, common-area maintenance costs, vehicle protection plans and other service fees) as elected under the practical expedient package provided by ASC 842.
The Company’s leases have remaining lease terms of one to eight years, some of which include options to renew or extend the lease term from one to five years. Our automobile leases include an option to purchase the vehicle at lease termination. The depreciable life of assets is limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. The exercise of lease renewal options or purchase at lease termination is at the Company’s sole discretion. If it is reasonably certain that we will exercise such options, the periods covered by such options are included in the lease term and are recognized as part of our ROU assets and lease liabilities.
58

Table of Contents
Supplemental balance sheet information related to leases was as follows:

Leases |  | Classification |  | December 31, 2021 |  | December 31, 2020
|  |  |  | (in thousands, except lease term and discount rate)
Assets |  |  |  |  |  |
Operating lease right-of-use assets |  | Other assets |  | $ | 6,067 |  |  | $ | 3,784 |
Total leased assets |  |  |  | $ | 6,067 |  |  | $ | 3,784 |
Liabilities |  |  |  |  |  |
Operating lease right-of-use liabilities |  | Accounts payable and accrued expenses |  | $ | 5,206 |  |  | $ | 3,873 |
Total lease liabilities |  |  |  | $ | 5,206 |  |  | $ | 3,873 |
Weighted average remaining lease term (years) |  |  |  |
Operating leases |  |  |  | 6.49 |  | 4.20
Weighted average discount rate |  |  |  |  |  |
Operating leases |  |  |  | 3.4 | % |  | 3.1 | %

The weighted average discount rate is based on the discount rate for each lease and the remaining balance of the lease payments for each lease at the reporting date.
Future maturities of the Company’s operating lease liabilities at December 31, 2021 are as follows:

Year |  | (in thousands)
2022 |  | $ | 1,056 |
2023 |  | 901 |
2024 |  | 812 |
2025 |  | 793 |
2026 |  | 790 |
Thereafter |  | 1,562 |
Total lease payments |  | 5,914 |
Less: interest |  | (708) |
Total lease liabilities |  | $ | 5,206 |

The following table represents future minimum lease payments under non-cancelable operating leases at December 31, 2021:

Year |  | (in thousands)
2022 |  | $ | 1,071 |
2023 |  | 904 |
2024 |  | 812 |
2025 |  | 793 |
2026 |  | 790 |
Thereafter |  | 1,562 |
|  | $ | 5,932 |

59

Table of Contents
The components of lease expense were as follows:

|  |  |  | Years Ended December 31,
Lease expense |  | Classification |  | 2021 |  | 2020
|  |  |  | (in thousands)
Operating lease cost |  | General and administrative |  | $ | 1,239 |  |  | $ | 1,141 |
Net lease cost |  |  |  | $ | 1,239 |  |  | $ | 1,141 |

Supplemental cash flow information related to leases was as follows:

|  | Years Ended December 31,
|  | 2021 |  | 2020
|  | (in thousands)
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases |  | $ | 1,446 |  |  | $ | 1,083 |
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |
Operating leases |  | $ | 4,131 |  |  | $ | 705 |

3. Revenue from Contracts with Customers
The following tables disaggregate revenue by major source for the years ended December 31, 2021 and 2020 (in thousands):

Year ended December 31, 2021 |  | Leasing and Related Operations |  | Spare Parts Sales |  | Eliminations |  | Total
Leasing revenue |  | $ | 134,831 |  |  | $ | — |  |  | $ | — |  |  | $ | 134,831 |
Maintenance reserve revenue |  | 73,961 |  |  | — |  |  | — |  |  | 73,961 |
Spare parts and equipment sales |  | 365 |  |  | 17,042 |  |  | 10 |  |  | 17,417 |
Gain on sale of leased equipment |  | 5,975 |  |  | — |  |  | — |  |  | 5,975 |
Gain on sale of financial assets (1) |  | 10,874 |  |  | — |  |  | — |  |  | 10,874 |
Asset transition fee (2) |  | 6,256 |  |  | — |  |  | — |  |  | 6,256 |
Managed services |  | 11,434 |  |  | — |  |  | — |  |  | 11,434 |
Other revenue |  | 13,088 |  |  | 523 |  |  | (157) |  |  | 13,454 |
Total revenue |  | $ | 256,784 |  |  | $ | 17,565 |  |  | $ | (147) |  |  | $ | 274,202 |

Year ended December 31, 2020 |  | Leasing and Related Operations |  | Spare Parts Sales |  | Eliminations |  | Total
Leasing revenue |  | $ | 142,895 |  |  | $ | — |  |  | $ | — |  |  | $ | 142,895 |
Maintenance reserve revenue |  | 105,365 |  |  | — |  |  | — |  |  | 105,365 |
Spare parts and equipment sales |  | 1,514 |  |  | 17,514 |  |  | (403) |  |  | 18,625 |
Gain on sale of leased equipment |  | 3,391 |  |  | — |  |  | — |  |  | 3,391 |
Managed services |  | 8,753 |  |  | — |  |  | — |  |  | 8,753 |
Other revenue |  | 9,651 |  |  | 327 |  |  | (315) |  |  | 9,663 |
Total revenue |  | $ | 271,569 |  |  | $ | 17,841 |  |  | $ | (718) |  |  | $ | 288,692 |

________________________________________________________
(1)Gain on sale of financial assets reflects the sales of two notes receivable during 2021.
(2)Asset transition fee reflects the settlement received from the close out of an engine transition program.
4. Equipment Held for Operating Lease
As of December 31, 2021, the Company’s $1,991.4 million equipment held for operating lease portfolio and $115.5 million notes receivable represented 304 engines, twelve aircraft, one marine vessel and other leased parts and equipment. As of December 31, 2020, the Company’s $1,886.6 million equipment held for operating lease portfolio and $158.7 million notes receivable represented 291 engines, eight aircraft, one marine vessel and other leased parts and equipment.
A majority of the equipment is leased and operated internationally. Substantially all leases relating to this equipment are denominated and payable in U.S. dollars.
60

Table of Contents
The Company leases equipment to lessees domiciled in seven geographic regions. The tables below set forth geographic information about the leased equipment grouped by domicile of the lessee (which is not necessarily indicative of the asset’s actual location):

|  | Years Ended December 31,
Lease rent revenue |  | 2021 |  | 2020
Region |  | (in thousands)
United States |  | $ | 61,947 |  |  | $ | 33,291 |
Europe |  | 30,299 |  |  | 57,972 |
Asia |  | 26,587 |  |  | 32,198 |
South America |  | 11,338 |  |  | 11,686 |
Mexico |  | 2,461 |  |  | 3,670 |
Canada |  | 1,245 |  |  | 2,011 |
Middle East |  | 954 |  |  | 2,067 |
Totals |  | $ | 134,831 |  |  | $ | 142,895 |

|  | As of December 31,
Net book value of equipment held for operating lease |  | 2021 |  | 2020
Region |  | (in thousands)
Europe |  | $ | 479,921 |  |  | $ | 460,664 |
United States |  | 425,822 |  |  | 362,471 |
Asia |  | 365,831 |  |  | 324,946 |
Mexico |  | 163,526 |  |  | 168,593 |
South America |  | 111,941 |  |  | 104,671 |
Canada |  | 55,109 |  |  | 8,500 |
Middle East |  | 22,320 |  |  | 47,899 |
Off-lease and other |  | 366,898 |  |  | 408,869 |
Totals |  | $ | 1,991,368 |  |  | $ | 1,886,613 |

As of December 31, 2021, the lease status of the equipment held for operating lease (in thousands) was as follows:

Lease Term |  | Net Book Value
Off-lease and other |  | $ | 366,898 |
Month-to-month leases |  | 206,813 |
Leases expiring 2022 |  | 776,831 |
Leases expiring 2023 |  | 311,814 |
Leases expiring 2024 |  | 147,450 |
Leases expiring 2025 |  | 30,558 |
Leases expiring 2026 |  | 26,000 |
Leases expiring thereafter |  | 125,004 |
|  | $ | 1,991,368 |

As of December 31, 2021, minimum future payments under non-cancelable leases were as follows:

Year |  | (in thousands)
2022 |  | $ | 111,643 |
2023 |  | 46,447 |
2024 |  | 22,412 |
2025 |  | 9,306 |
2026 |  | 6,177 |
Thereafter |  | 27,179 |
|  | $ | 223,164 |

61

Table of Contents
5. Investments
In 2011, the Company entered into an agreement with Mitsui & Co., Ltd. to participate in a joint venture formed as a Dublin-based Irish limited company – Willis Mitsui & Company Engine Support Limited (“WMES”) for the purpose of acquiring and leasing jet engines. Each partner holds a 50% interest in the joint venture and the Company uses the equity method in recording investment activity. As of December 31, 2021, WMES owned a lease portfolio, inclusive of a note receivable, of 37 engines and five aircraft with a net book value of $292.5 million.
In 2014, the Company entered into an agreement with China Aviation Supplies Import & Export Corporation (“CASC”) to participate in a joint venture named CASC Willis Lease Finance Company Limited (“CASC Willis”), a joint venture based in Shanghai, China. Each partner holds a 50% interest in the joint venture and the Company uses the equity method in recording investment activity. CASC Willis acquires and leases jet engines to Chinese airlines and concentrates on the demand for leased commercial aircraft engines and aviation assets in the People’s Republic of China. As of December 31, 2021, CASC Willis owned a lease portfolio of four engines with a net book value of $49.0 million.

As of December 31, 2021 |  | WMES |  | CASC Willis |  | Total
|  | (in thousands)
Investment in joint ventures as of December 31, 2019 |  | $ | 44,134 |  |  | $ | 13,802 |  |  | $ | 57,936 |
Earnings from joint ventures |  | 1,552 |  |  | 1,090 |  |  | 2,642 |
Distribution |  | (7,200) |  |  | — |  |  | (7,200) |
Foreign currency translation adjustment |  | — |  |  | 1,018 |  |  | 1,018 |
Other comprehensive loss from joint ventures |  | (1,121) |  |  | — |  |  | (1,121) |
Investment in joint ventures as of December 31, 2020 |  | 37,365 |  |  | 15,910 |  |  | 53,275 |
Earnings from joint ventures |  | 250 |  |  | 550 |  |  | 800 |
Foreign currency translation adjustment |  | — |  |  | 398 |  |  | 398 |
Other comprehensive loss from joint ventures |  | 1,454 |  |  | — |  |  | 1,454 |
Investment in joint ventures as of December 31, 2021 |  | $ | 39,069 |  |  | $ | 16,858 |  |  | $ | 55,927 |

“Other revenue” on the Consolidated Statements of Income includes management fees earned of $2.1 million and $1.6 million during the years ended December 31, 2021 and 2020, respectively, related to the servicing of engines for the WMES lease portfolio.
During 2021, the Company sold two engines to WMES for $25.0 million. During 2020, the Company sold one note receivable to WMES for $8.4 million.
There were no aircraft or engine sales to CASC Willis during 2021 or 2020.
Unaudited summarized financial information for 100% of WMES is presented in the following table:

| Years Ended December 31,
2021 |  | 2020
(in thousands)
Revenue | $ | 29,596 |  |  | $ | 38,086 |
Expenses | 29,303 |  |  | 35,190 |
WMES net income | $ | 293 |  |  | $ | 2,896 |

| As of December 31,
2021 |  | 2020
(in thousands)
Total assets | $ | 310,260 |  |  | $ | 303,886 |
Total liabilities | 225,917 |  |  | 219,836 |
Total WMES net equity | $ | 84,343 |  |  | $ | 84,050 |

The difference between the Company’s investment in WMES and 50% of total WMES net equity is primarily attributable to the recognition of deferred gains, prior to the adoption of ASU 2017-05, related to engines sold by the Company to WMES.
62

Table of Contents
6. Debt Obligations
Debt obligations consisted of the following:

| As of December 31,
2021 |  | 2020
(in thousands)
Credit facility at a floating rate of interest of one-month LIBOR plus 1.75% at December 31, 2021, secured by engines. The facility has a committed amount of $1.0 billion at December 31, 2021, which revolves until the maturity date of June 2024 | $ | 590,000 |  |  | $ | 777,000 |
WEST VI Series A 2021 term notes payable at a fixed rate of interest of 3.10%, maturing in May 2046, secured by engines | 273,723 |  |  | — |
WEST VI Series B 2021 term notes payable at a fixed rate of interest of 5.44%, maturing in May 2046, secured by engines | 38,022 |  |  | — |
WEST VI Series C 2021 term notes payable at a fixed rate of interest of 7.39%, maturing in May 2046, secured by engines | 18,158 |  |  | — |
WEST V Series A 2020 term notes payable at a fixed rate of interest of 3.23%, maturing in March 2045, secured by engines | 272,909 |  |  | 286,863 |
WEST V Series B 2020 term notes payable at a fixed rate of interest of 4.21%, maturing in March 2045, secured by engines | 38,004 |  |  | 39,855 |
WEST V Series C 2020 term notes payable at a fixed rate of interest of 6.66%, maturing in March 2045, secured by engines | 16,342 |  |  | 19,043 |
WEST IV Series A 2018 term notes payable at a fixed rate of interest of 4.75%, maturing in September 2043, secured by engines | 262,260 |  |  | 277,481 |
WEST IV Series B 2018 term notes payable at a fixed rate of interest of 5.44%, maturing in September 2043, secured by engines | 38,885 |  |  | 39,640 |
WEST III Series A 2017 term notes payable at a fixed rate of interest of 4.69%, maturing in August 2042, secured by engines | 223,815 |  |  | 227,138 |
WEST III Series B 2017 term notes payable at a fixed rate of interest of 6.36%, maturing in August 2042, secured by engines | 32,195 |  |  | 32,481 |
Note payable at three-month LIBOR plus a margin ranging from 1.85% to 2.50%, repaid in May 2021, secured by engines | — |  |  | 6,138 |
Note payable at a fixed rate of interest of 3.18%, maturing in July 2024, secured by an aircraft | 5,307 |  |  | 7,247 |
| 1,809,620 |  |  | 1,712,886 |
Less: unamortized debt issuance costs | (19,356) |  |  | (19,133) |
Total debt obligations | $ | 1,790,264 |  |  | $ | 1,693,753 |

One-month LIBOR was 0.10% and 0.14% as of December 31, 2021 and 2020, respectively.
Principal outstanding at December 31, 2021, is expected to be repayable as follows:

Year |  | (in thousands)
2022 |  | $ | 79,726 |
2023 |  | 63,069 |
2024 |  | 652,236 |
2025 |  | 61,001 |
2026 |  | 280,029 |
Thereafter |  | 673,559 |
Total |  | $ | 1,809,620 |

At December 31, 2021, the Company had a revolving credit facility to finance the acquisition of equipment for lease as well as for general working capital purposes, with the amounts drawn under the facility not to exceed that which is allowed under the borrowing base as defined by the credit agreement. In June 2019, the Company entered into the Fourth Amended and Restated Credit Agreement (“Amended Credit Agreement”) which incorporates an accordion feature that can expand the $1.0 billion credit facility up to $1.3 billion. Pursuant to the Amended Credit Agreement, all obligations under the revolving credit facility are collateralized by the title and interest of the Company and certain of its subsidiaries, and to substantially all of its assets and properties.
63

Table of Contents
In October 2020, the Company entered into a Limited Waiver (the “Waiver”) to its Amended Credit Agreement. The Waiver provides for the partial exclusion for specified periods of certain asset book values in the calculation of customer concentration limits, as such limits are defined in the Amended Credit Agreement.
In June 2021, the Company entered into Amendment No. 2 to the Amended Credit Agreement, which updates the provisions relating to the future discontinuance of LIBOR and sets forth the mechanics for establishing the Secured Overnight Financing Rate (“SOFR”) as a benchmark replacement rate.
As of December 31, 2021 and 2020, $410.0 million and $223.0 million were available under this facility, respectively. On a quarterly basis, the interest rate is adjusted based on the Company’s leverage ratio, as calculated under the terms of the revolving credit facility. Under the revolving credit facility, all subsidiaries except WEST III, WEST IV, WEST V and WEST VI jointly and severally guarantee payment and performance of the terms of the loan agreement. The guarantee would be triggered by a default under the agreement.
In March 2020, WLFC and its direct, wholly-owned subsidiary WEST V, closed its offering of $366.2 million aggregate principal amount of fixed rate notes. The WEST V Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $303.0 million, the Series B Notes issued in an aggregate principal amount of $42.1 million and the Series C Notes issued in an aggregate principal amount of $21.1 million. The WEST V Notes are secured by, among other things, WEST V’s direct and indirect ownership interests in a portfolio of aircraft engines and airframes.
The Series A Notes have a fixed coupon of 3.228%, an expected maturity of approximately eight years and a final maturity date in March 2045, the Series B Notes have a fixed coupon of 4.212%, an expected maturity of approximately eight years and a final maturity date in March 2045 and the Series C Notes have a fixed coupon of 6.657%, an expected maturity of approximately eight years and a final maturity date in March 2045. The Series A Notes were issued at a price of 99.99859% of par, the Series B Notes were issued at a price of 99.99493% of par and the Series C Notes were issued at a price of 99.99918% of par. Principal on the WEST V Notes is payable monthly to the extent of available cash in accordance with a priority of payments included in the indenture for the WEST V Notes. Proceeds from asset sales by WEST V will be used, at WEST V’s election subject to certain conditions, to reduce WEST V's debt or to acquire other engines or airframes.
The Company recognized a $4.7 million loss on debt extinguishment upon the repayment of the WEST II Series A 2012 term notes in March 2020.
In May 2021, WLFC and its direct, wholly-owned subsidiary WEST VI, closed its offering of $336.7 million aggregate principal amount of fixed rate notes. The WEST VI Notes were issued in three series, with the Series A Notes issued in an aggregate principal amount of $278.6 million, the Series B Notes issued in an aggregate principal amount of $38.7 million and the Series C Notes issued in an aggregate principal amount of $19.4 million. The WEST VI Notes are secured by, among other things, WEST VI’s direct and indirect ownership interests in a portfolio of aircraft engines and an airframe.
The Series A Notes have a fixed coupon of 3.104%, an expected maturity of approximately eight years and a final maturity date in May 2046, the Series B Notes have a fixed coupon of 5.438%, an expected maturity of approximately eight years and a final maturity date in May 2046 and the Series C Notes have a fixed coupon of 7.385%, an expected maturity of approximately eight years and a final maturity date in May 2046. The Series A Notes were issued at a price of 99.99481% of par, the Series B Notes were issued at a price of 99.99996% of par and the Series C Notes were issued at a price of 99.99869% of par. Principal on the WEST VI Notes is payable monthly to the extent of available cash in accordance with a priority of payments included in the indenture.
In May 2021, WLFC repaid an existing note payable that was secured by two engines.
The assets of WEST III, WEST IV, WEST V and WEST VI are not available to satisfy the Company’s obligations other than the obligations specific to that WEST entity. WEST III, WEST IV, WEST V and WEST VI are consolidated for financial statement presentation purposes. WEST III, WEST IV, WEST V and WEST VI’s ability to make distributions and pay dividends to the Company is subject to the prior payments of their debt and other obligations and their maintenance of adequate reserves and capital. Under WEST III, WEST IV, WEST V and WEST VI, cash is collected in restricted accounts, which are used to service the debt and any remaining amounts, after debt service and defined expenses, are distributed to the Company. Additionally, a portion of maintenance reserve payments and lease security deposits are formulaically accumulated in restricted accounts and are available to fund future maintenance events and to secure lease payments, respectively. The WEST III, WEST IV, WEST V and WEST VI indentures require that a minimum threshold of maintenance reserve and security deposit balances be held in restricted cash accounts.
Virtually all of the above debt requires ongoing compliance with the covenants of each financing, including debt/equity ratios, minimum tangible net worth and minimum interest coverage ratios, and other eligibility criteria including customer and geographic concentration restrictions. The Company also has certain negative financial covenants such as liens, advances, change in business,
64

Table of Contents
sales of assets, dividends and stock repurchases. These covenants are tested either monthly or quarterly and the Company was in full compliance with all financial covenant requirements at December 31, 2021.
7. Derivative Instruments
The Company periodically holds interest rate derivative instruments to mitigate exposure to changes in interest rates, to predominantly one-month LIBOR, with $590.0 million and $783.1 million of variable rate borrowings at December 31, 2021 and 2020, respectively. As a matter of policy, management does not use derivatives for speculative purposes. As of December 31, 2021, the Company has five interest rate swap agreements. During the first quarter of 2021, the Company entered into four fixed-rate interest swap agreements, each having notional amounts of $100.0 million, two with remaining terms of 25 months and two with remaining terms of 49 months as of December 31, 2021. One interest rate swap agreement was entered into during 2019 which has a notional outstanding amount of $100.0 million with a remaining term of 30 months as of December 31, 2021. One interest rate swap agreement which the Company entered into in 2016 expired in April 2021. The derivative instruments were designated as cash flow hedges at inception and recorded at fair value.
The Company evaluated the effectiveness of the swaps to hedge the interest rate risk associated with its variable rate debt and concluded at the swap inception date that the swaps were highly effective in hedging that risk. The Company evaluates the effectiveness of the hedging relationship on an ongoing basis and concluded there was no ineffectiveness in the hedges for the year ended December 31, 2021.
The Company estimates the fair value of derivative instruments using a discounted cash flow technique and has used creditworthiness inputs that corroborate observable market data evaluating the Company’s and counterparties’ risk of non-performance. Valuation of the derivative instruments requires certain assumptions for underlying variables and the use of different assumptions would result in a different valuation. Management believes it has applied assumptions consistently during the period. The Company applies hedge accounting and accounts for the change in fair value of its cash flow hedges through other comprehensive income for all derivative instruments.
The net fair value of the swaps as of December 31, 2021 was $7.3 million, representing an asset of $8.0 million and a liability of $0.7 million. The net fair value of the interest rate swaps as of December 31, 2020 was $4.0 million, representing a liability. The Company recorded interest expense of $2.4 million and $2.0 million during the years ended December 31, 2021 and 2020, respectively, from derivative investments. As of December 31, 2021 the accumulative derivative gain was $7.3 million and as of December 31, 2020 the accumulative derivative loss was $3.8 million.
Effect of Derivative Instruments on Earnings in the Statements of Income and of Comprehensive Income
The following table provides additional information about the financial statement effects related to the cash flow hedges for the years ended December 31, 2021 and 2020:

Derivatives in Cash Flow Hedging Relationships |  | Amount of Gain (Loss) Recognized in OCI on Derivatives (Effective Portion)
| Years Ended December 31,
| 2021 |  | 2020
|  | (in thousands)
Interest rate contracts |  | $ | 11,250 |  |  | $ | (2,298) |
Total |  | $ | 11,250 |  |  | $ | (2,298) |

The effective portion of the change in fair value on a derivative instrument designated as a cash flow hedge is reported as a component of other comprehensive income and is reclassified into earnings in the period during which the transaction being hedged affects earnings or it is probable that the forecasted transaction will not occur. The ineffective portion of the hedges, if any, is recorded in earnings in the current period. There was no ineffectiveness in the hedges for the years ended December 31, 2021 and 2020.
Counterparty Credit Risk
The Company evaluates the creditworthiness of the counterparties under its hedging agreements. The counterparties for the interest rate swaps are large financial institutions that possessed an investment grade credit rating. Based on this rating, the Company believes that the counterparties were credit-worthy and that their continuing performance under the hedging agreement was probable and did not require the counterparties to provide collateral or other security to the Company.
65

Table of Contents
8. Income Taxes
The components of income before income taxes are as follows:

| Years ended December 31,
| 2021 |  | 2020
| (in thousands)
United States | $ | 4,659 |  |  | $ | 16,990 |
Foreign | 4,481 |  |  | 346 |
Income before income taxes | $ | 9,140 |  |  | $ | 17,336 |

The components of income tax expense for the years ended December 31, 2021 and 2020 were as follows:

| Federal |  | State |  | Foreign |  | Total
| (in thousands)
2021 |  |  |  |  |  |  |
Current | $ | — |  |  | $ | (2) |  |  | $ | 1,597 |  |  | $ | 1,595 |
Deferred | 4,072 |  |  | 121 |  |  | — |  |  | 4,193 |
Total | $ | 4,072 |  |  | $ | 119 |  |  | $ | 1,597 |  |  | $ | 5,788 |
2020 |  |  |  |  |  |  |
Current | $ | — |  |  | $ | (88) |  |  | $ | 723 |  |  | $ | 635 |
Deferred | 6,251 |  |  | 702 |  |  | — |  |  | 6,953 |
Total | $ | 6,251 |  |  | $ | 614 |  |  | $ | 723 |  |  | $ | 7,588 |

The following is a reconciliation of the federal income tax expense at the statutory rate of 21% for the years ended December 31, 2021 and 2020 to the effective income tax expense:

| Years Ended December 31,
| 2021 |  | 2020
| (in thousands)
Statutory federal income tax expense | $ | 1,844 |  |  | $ | 3,640 |
State taxes, net of federal benefit | 119 |  |  | 633 |
Foreign tax paid | — |  |  | — |
Foreign jurisdiction rate differential | 705 |  |  | 508 |
Permanent differences-nondeductible executive compensation | 2,042 |  |  | 2,748 |
Permanent differences and other | 1,078 |  |  | 59 |
Effective income tax expense | $ | 5,788 |  |  | $ | 7,588 |

Permanent differences and other includes Subpart F income of $1.4 million from foreign operations for the year-ended December 31, 2021. The Company records tax expense or benefit for unusual or infrequent items discretely in the period in which they occur.
The following table summarizes the activity related to the Company’s unrecognized tax benefits:

| (in thousands)
Balance as of December 31, 2019 | $ | 270 |
Increases related to current year tax positions | 66 |
Decreases due to tax positions expired | (6) |
Balance as of December 31, 2020 | 330 |
Decreases related to current year tax positions | — |
Decreases due to tax positions expired | (317) |
Balance as of December 31, 2021 | $ | 13 |

A $0.0 and $0.3 million reserve was established as of December 31, 2021 and 2020, respectively, for the exposure in Europe. Due to law changes in the United Kingdom, the Company believes that it is at a more likely than not position and has released the 2020 $0.3 million reserve.
66

Table of Contents
The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities are presented below:

| As of December 31,
| 2021 |  | 2020
| (in thousands)
Deferred tax assets: |  |  |
Unearned lease revenue | $ | 2,217 |  |  | $ | 2,519 |
State taxes | — |  |  | 10 |
Inventory | 1,486 |  |  | 2,153 |
Reserves and allowances | 6,781 |  |  | 4,356 |
Other accruals | 2,577 |  |  | 1,769 |
Foreign tax credit | — |  |  | — |
Lease liability | 146 |  |  | 198 |
Net operating loss carry forward | 68,168 |  |  | 74,045 |
California alternative minimum tax credit | 33 |  |  | 33 |
Charitable contributions | 2 |  |  | 65 |
Total deferred tax assets | 81,410 |  |  | 85,148 |
Less: valuation allowance | (518) |  |  | (468) |
Net deferred tax assets | 80,892 |  |  | 84,680 |
Deferred tax liabilities: |  |  |
Depreciation and impairment on aircraft engines and equipment | (183,131) |  |  | (163,773) |
Inventory | — |  |  | — |
Notes receivable | (15,911) |  |  | (34,426) |
Right of use liability | (139) |  |  | (184) |
Other deferred tax liabilities | (4,595) |  |  | (4,616) |
Net deferred tax liabilities | (203,776) |  |  | (202,999) |
Other comprehensive (income) loss deferred tax liability | (1,448) |  |  | 1,481 |
Net deferred tax liabilities | $ | (124,332) |  |  | $ | (116,838) |

As of December 31, 2021, the Company had net operating loss carry forwards of approximately $316.3 million for federal tax purposes and $2.2 million (tax effected) for state tax purposes. The majority of the federal net operating loss carry forwards were generated in 2020 and can be carried forward indefinitely, the remainder will expire at various times from 2032 to 2037, and the state net operating loss carry forwards will expire at various times from 2026 to 2042. There is a $0.5 million valuation allowance for net operating losses in California that expire between 2034 and 2042 and a $0.1 million valuation allowance for net operating losses in Georgia that expire between 2032 and 2040. The Company’s ability to utilize the net operating loss and tax credit carry forwards in the future may be subject to restriction in the event of past or future ownership changes as defined in Section 382 of the Internal Revenue Code and similar state tax law. Management believes that no valuation allowance is required on deferred tax assets related to federal net operating loss carry forwards, as it is more likely than not that all amounts are recoverable through future taxable income. The open tax years for federal and state tax purposes are from 2004 to 2021, respectively.
It is the Company's intention to reinvest undistributed earnings of their wholly owned foreign operations and thereby indefinitely postpone their remittance. Accordingly, no provision has been made for foreign withholding taxes or U.S. Income taxes.
9. Fair Value Measurements
The fair value of a financial instrument represents the amount at which the instrument could be exchanged in a current transaction between willing parties, other than in a forced sale or liquidation. Fair value estimates are made at a specific point in time, based on relevant market information about the financial instrument. These estimates are subjective in nature and involve uncertainties and matters of judgment, and therefore cannot be determined with precision.
67

Table of Contents
Accounting standards define fair value as the price that would be received from selling an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. Accounting standards establish a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value and also establishes the following three levels of inputs that may be used to measure fair value:
Level 1 - Quoted prices in active markets for identical assets or liabilities.
Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
The following methods and assumptions were used by the Company in estimating fair value disclosures for financial instruments:
•Cash and cash equivalents, restricted cash, receivables, and accounts payable: The amounts reported in the accompanying Consolidated Balance Sheets approximate fair value due to their short-term nature.
•Notes receivable: The carrying amount of the Company’s outstanding balance on its Notes receivable as of December 31, 2021 and 2020 was estimated to have a fair value of approximately $117.7 million and $159.2 million, respectively, based on the fair value of estimated future payments calculated using interest rates that approximate prevailing market rates at each period end (Level 2 inputs).
•Debt obligations: The carrying amount of the Company’s outstanding balance on its Debt obligations as of December 31, 2021 and 2020 was estimated to have a fair value of approximately $1,827.4 million and $1,691.0 million, respectively, based on the fair value of estimated future payments calculated using interest rates that approximate prevailing market rates at each year end (Level 2 inputs).
Assets Measured and Recorded at Fair Value on a Recurring Basis
As of December 31, 2021 and 2020, the Company measured the fair value of its interest rate swaps based on Level 2 inputs, due to the usage of inputs that can be corroborated by observable market data. The Company estimates the fair value of derivative instruments using a discounted cash flow technique and has used creditworthiness inputs that corroborate observable market data evaluating the Company’s and counterparties’ risk of non-performance. The net fair value of the interest rate swaps as of December 31, 2021 was $7.3 million, representing an asset of $8.0 million and a liability of $0.7 million. The net fair value of the interest rate swaps as of December 31, 2020 was $4.0 million, representing a liability. The Company recorded interest expense of $2.4 million and $2.0 million during the years ended December 31, 2021 and 2020, respectively, from derivative investments.
Assets Measured and Recorded at Fair Value on a Nonrecurring Basis
The Company determines fair value of long-lived assets held and used, such as Equipment held for operating lease and Equipment held for sale, by reference to independent appraisals, quoted market prices (e.g. an offer to purchase) and other factors. An impairment charge is recorded when the carrying value of the asset exceeds its fair value. The Company used Level 2 inputs to measure write-downs of equipment held for lease and equipment held for sale.

| Total Losses
| Years Ended December 31,
| 2021 |  | 2020
| (in thousands)
Equipment held for lease | $ | 7,651 |  |  | $ | 20,470 |
Equipment held for sale | 64 |  |  | 70 |
Total | $ | 7,715 |  |  | $ | 20,540 |

Write-downs of equipment to their estimated fair values totaled $7.7 million for the year ended December 31, 2021 which included write-downs of $3.9 million due to a management decision to monetize three engines and one airframe either by sale to a third party or for part-out and $3.8 million for the adjustment of the carrying value of seven impaired engines. As of December 31, 2021, included within equipment held for lease and equipment held for sale was $36.0 million in remaining book value of 22 assets which were previously written down.
68

Table of Contents
Write-downs of equipment to their estimated fair values totaled $20.5 million for the year ended December 31, 2020 which included write-downs of $15.2 million due to a management decision to monetize 10 engines and two airframes either by sale to a third party or for part-out and $5.3 million for the adjustment of the carrying value of seven impaired engines.
10. Earnings Per Share
Basic earnings per common share is computed by dividing net income, less preferred stock dividends and accretion of preferred stock issuance costs, by the weighted average number of common shares outstanding for the period. Treasury stock is excluded from the weighted average number of shares of common stock outstanding. Diluted earnings per share attributable to common stockholders is computed based on the weighted average number of shares of common stock and dilutive securities outstanding during the period. Dilutive securities are common stock equivalents that are freely exercisable into common stock at less than market prices or otherwise dilute earnings if converted. The net effect of common stock equivalents is based on the incremental common stock that would be issued upon the vesting of restricted stock using the treasury stock method. Common stock equivalents are not included in diluted earnings per share when their inclusion is anti-dilutive. Additionally, redeemable preferred stock is not convertible and does not affect dilutive shares.
There were no anti-dilutive shares excluded in the computations of diluted weighted average earnings per common share for the years ended December 31, 2021 and 2020.
The following table presents the calculation of basic and diluted EPS:

| Year Ended December 31,
| 2021 |  | 2020
| (in thousands)
Net income attributable to common shareholders | $ | 18 |  |  | $ | 6,405 |
Basic weighted average common shares outstanding | 6,112 |  |  | 5,963 |
Potentially dilutive common shares | 234 |  |  | 165 |
Diluted weighted average common shares outstanding | 6,346 |  |  | 6,128 |
Basic weighted average earnings per common share | $ | — |  |  | $ | 1.07 |
Diluted weighted average earnings per common share | $ | — |  |  | $ | 1.05 |

11. Commitments, Contingencies, Guarantees and Indemnities
Other obligations
Other obligations, such as certain purchase obligations are not recognized as liabilities in the consolidated financial statements but are required to be disclosed in the footnotes to the financial statements. These funding commitments could potentially require the Company’s performance in the event of demands by third parties or contingent events. As of December 31, 2021, the Company had $439.9 million in purchase commitments of equipment that will be satisfied within four fiscal years. The purchase obligations are subject to escalation based on the closing date of each transaction.
In May 2021, the Company entered into a commitment for future maintenance services which are anticipated to cost $24.0 million by 2024.
In December 2020, the Company entered into definitive agreements for the purchase of 25 modern technology aircraft engines. As part of the purchase, the Company has committed to certain future overhaul and maintenance services which are anticipated to range between $73.8 million and $112.0 million by 2030.
69

Table of Contents
12. Equity
Common Stock Repurchase
Effective December 31, 2018, the Board of Directors approved the renewal of the existing common stock repurchase plan extending the plan through December 31, 2020 and amending the plan to allow for repurchases of up to $60.0 million of the Company’s common stock until such date. Effective December 31, 2020, the Board of Directors approved the renewal of the existing common stock repurchase plan extending the plan through December 31, 2022. Repurchased shares are immediately retired. During 2021, the Company repurchased 268,408 shares of common stock for approximately $10.1 million under the plan, at a weighted average price of $37.57 per share. During 2020, the Company repurchased 55,426 shares of common stock for approximately $1.5 million under the plan, at a weighted average price of $27.24 per share. At December 31, 2021, approximately $44.8 million was available to purchase shares under the plan.
Redeemable Preferred Stock
In October 2016, the Company sold and issued to Development Bank of Japan Inc. (“DBJ”) an aggregate of 1,000,000 shares of the Company’s 6.5% Series A Preferred Stock, $0.01 par value per share (the “Series A Preferred Stock”) at a purchase price of $20.00 per share. The net proceeds to the Company after deducting investor fees were $19.8 million.
In September 2017, the Company sold and issued to DBJ an aggregate of 1,500,000 shares of the Company’s 6.5% Series A-2 Preferred Stock, $0.01 par value per share (the “Series A-2 Preferred Stock”) at a purchase price of $20.00 per share. The net proceeds to the Company after deducting issuance costs were $29.7 million.
The rights and privileges of the Preferred Stock are described below:
Voting Rights: Holders of the Preferred Stock do not have general voting rights.
Dividends: The Company’s Series A-1 Preferred Stock and Series A-2 Preferred Stock accrue quarterly dividends at the rate per annum of 6.5% per share. During the years ended December 31, 2021 and 2020, the Company paid total dividends of $3.3 million on the Series A-1 and Series A-2 Preferred Stock, respectively.
Liquidation Preference: The holders of the Preferred Stock have preference in the event of any voluntary or involuntary liquidation, dissolution, or winding-up of the corporation, including a merger or consolidation. Upon such liquidation event, the Preferred Stockholders are entitled to be paid out of the assets of the Company available for distribution to its stockholders after payment of all the Company’s indebtedness and other obligations and before any payment shall be made to the holders of common stock or any other class or series of stock ranking on liquidation junior to the Preferred Stock an amount equal to $20.00 per share, plus any declared but unpaid dividends.
Redemption: The Preferred Stock has no stated maturity date, however the holders of the Preferred Stock have the option to require the Company to redeem all or any portion of the Preferred Stock for cash upon occurrence of any significant changes in operating results, ownership structure, or liquidity events as defined in the Preferred Stock purchase agreements. The redemption price is $20.00 per share plus dividends accrued but not paid. The Company is accreting the Preferred Stock to redemption value over the period from the date of issuance to the date first callable by the Preferred Stockholders (October 2023 for the Series A Preferred Stock and September 2024 for the Series A-2 Preferred Stock), such that the carrying amounts of the securities will equal the redemption amounts at the earliest redemption dates.
13. Stock-Based Compensation Plans
The components of stock compensation expense were as follows:

| Year Ended December 31,
| 2021 |  | 2020
| (in thousands)
2007 Stock Incentive Plan | $ | 1,659 |  |  | $ | 3,142 |
2021 Stock Incentive Plan | 14,678 |  |  | 7,960 |
Employee Stock Purchase Plan | 241 |  |  | 276 |
Total Stock Compensation Expense | $ | 16,578 |  |  | $ | 11,378 |

The significant stock compensation plans are described below.
The 2007 Stock Incentive Plan (the “2007 Plan”) was adopted in May 2007. Under this 2007 Plan, a total of 2,800,000 shares were authorized for stock-based compensation available in the form of either restricted stock awards (“RSAs”) or stock options. The
70

Table of Contents
RSAs are subject to service-based vesting, typically between one and four years, where a specific period of continued employment must pass before an award vests. The expense associated with these awards is recognized on a straight-line basis over the respective vesting period, with forfeitures accounted for as they occur. For any vesting tranche of an award, the cumulative amount of compensation cost recognized is equal to the portion of the grant date fair value of the award tranche that is actually vested at that date. As of December 31, 2021, there are no stock options outstanding under the 2007 Plan.
The 2018 Stock Incentive Plan (the “2018 Plan”) was adopted in May 2018. Under this 2018 Plan total of 800,000 shares were authorized for stock-based compensation, plus the number of shares remaining under the 2007 Plan and any future forfeited awards under the 2007 Plan, in the form of RSAs. In November 2021, the 2018 Plan was amended and restated as the 2021 Stock Incentive Plan (the “2021 Plan”) to increase the number of shares reserved for issuance under the 2021 Plan by 1,000,000 shares. The RSAs are subject to service-based vesting, typically between one and four years, where a specific period of continued employment must pass before an award vests. The expense associated with these awards is recognized on a straight-line basis over the respective vesting period, with forfeitures accounted for as they occur. For any vesting tranche of an award, the cumulative amount of compensation cost recognized is equal to the portion of the grant date fair value of the award tranche that is actually vested at that date.
As of December 31, 2021, the Company has granted 926,300 RSAs under the 2021 Plan and has 968,296 shares available for future issuance. The fair value of the restricted stock awards equaled the stock price at the grant date.
The following table summarizes restricted stock activity under the 2007 and 2021 Plans for the years ended December 31, 2021 and 2020:

| Number Outstanding |  | Weighted Average Grant Date Fair Value |
Balance as of December 31, 2019 | 505,467 |  |  | $ | 37.70 |  |
Shares granted | 319,350 |  |  | 19.00 |  |
Shares forfeited | — |  |  | — |  |
Shares vested | (243,102) |  |  | 28.35 |  |
Balance as of December 31, 2020 | 581,715 |  |  | 31.34 |  |
Shares granted | 327,550 |  |  | 42.40 |  |
Shares forfeited | — |  |  | — |  |
Shares vested | (348,657) |  |  | 28.66 |  |
Balance as of December 31, 2021 | 560,608 |  |  | $ | 36.30 |  |

At December 31, 2021 the stock compensation expense related to the RSAs that will be recognized over the average remaining vesting period of 1.0 years totaled $9.7 million. At December 31, 2021, the intrinsic value of unvested RSAs was $21.1 million.
Under the Employee Stock Purchase Plan (“ESPP”), as amended and restated effective November 10, 2021, 425,000 shares of common stock have been reserved for issuance. Eligible employees may designate no more than 10% of their base cash compensation to be deducted each pay period for the purchase of common stock under the Purchase Plan. Participants may purchase no more than 1,000 shares or $25,000 of common stock in any one calendar year. Each January 31 and July 31 shares of common stock are purchased with the employees’ payroll deductions from the immediately preceding six months at a price per share of 85% of the lesser of the market price of the common stock on the purchase date or the market price of the common stock on the date of entry into an offering period. In 2021 and 2020, 18,211 and 11,394 shares of common stock, respectively, were issued under the ESPP. The Company issues new shares through its transfer agent upon employee stock purchase.
14. Employee 401(k) Plan
The Company adopted The Willis 401(k) Plan (the “401(k) Plan”) effective as of January 1997. The 401(k) Plan provides for deferred compensation as described in Section 401(k) of the Internal Revenue Code. The 401(k) Plan is a contributory plan available to all full-time and part-time employees in the United States. In 2021, employees who participated in the 401(k) Plan could elect to defer and contribute to the 401(k) Plan up to 75% of pretax salary or wages up to $19,500 (or $26,000 for employees at least 50 years of age). The Company matches 50% of employee contributions and was capped at $13,000 per employee in 2021. The Company match totaled $0.7 million and $0.8 million for the years ended December 31, 2021 and 2020, respectively.
15. Related Party Transactions
Joint Ventures
“Other revenue” on the Consolidated Statement of Income includes management fees earned of $2.1 million and $1.6 million during the years ended December 31, 2021 and 2020, respectively, related to the servicing of engines for the WMES lease portfolio.
71

Table of Contents
During 2021, the Company sold two engines to WMES for $25.0 million. During 2020, the Company sold one note receivable to WMES for $8.4 million.
There were no aircraft or engine sales to CASC Willis during 2021 or 2020.
Other
On December 2, 2021, in a transaction approved by an independent committee, as well as the Audit Committee, of the Board of Directors, the Company purchased 60,000 shares of its common stock directly from the Company’s Chief Executive Officer (“CEO”), Charles F. Willis. The agreed and paid price per share was $35.43, the discounted volume weighted average price on December 2, 2021.
On October 1, 2021, the Board’s Independent Directors approved the payment of $0.2 million to the Company’s CEO, Charles F. Willis, for reimbursement of a golf club membership fee, as well as future payments of reasonable annual golf club dues.
During 2021, the Company paid approximately $27,000 of expenses payable to Mikchalk Lake, LLC, an entity in which our Chief Executive Officer (“CEO”) retains an ownership interest. These expenses were for lodging and other business related services. These transactions were approved by the Board’s Independent Directors.
During 2020, the Board’s Independent Directors approved the Company’s agreement to a lease with our CEO in support of the Company’s marine vessel leasing business. That lease provides for a payment to our CEO of $750 per day for the use of his tender in support of our vessel lease to a third-party lessee. In addition, the Company purchased a hull insurance policy, for our CEO’s tender, at a rate of $6,800 per annum, plus a one-time subscriber fee of $695 to insure his tender while in the service of the Company’s vessel leasing business. The Company has paid a total of $41,250 and $9,750 during the years ended December 31, 2021 and 2020, respectively, for usage of the tender. On November 11, 2021, in a transaction approved by the Independent Compensation Committee, the Company purchased the tender for $0.5 million. Additionally, during 2020, our CEO was charged $4,000 for personal expenses while onboard the Company’s marine vessel.
During 2020, the Company’s CEO was charged $9,100 for the purchase of artwork.
16. Reportable Segments
The Company has two reportable business segments: (i) Leasing and Related Operations which involves acquiring and leasing, primarily pursuant to operating leases, commercial aircraft, aircraft engines and other aircraft equipment and the selective purchase and resale of commercial aircraft engines and other aircraft equipment and other related businesses and (ii) Spare Parts Sales which involves the purchase and resale of after-market engine parts, whole engines, engine modules and portable aircraft components.
The Company evaluates the performance of each of the segments based on profit or loss after general and administrative expenses. While the Company believes there are synergies between the two business segments, the segments are managed separately because each requires different business strategies.
72

Table of Contents
The following tables present a summary of the reportable segments (in thousands):

For the year ended December 31, 2021 |  | Leasing and Related Operations |  | Spare Parts Sales |  | Eliminations |  | Total
Revenue: |  |  |  |  |  |  |  |
Lease rent revenue |  | $ | 134,831 |  |  | $ | — |  |  | $ | — |  |  | $ | 134,831 |
Maintenance reserve revenue |  | 73,961 |  |  | — |  |  | — |  |  | 73,961 |
Spare parts and equipment sales |  | 365 |  |  | 17,042 |  |  | 10 |  |  | 17,417 |
Gain on sale of leased equipment |  | 5,975 |  |  | — |  |  | — |  |  | 5,975 |
Gain on sale of financial assets (1) |  | 10,874 |  |  | — |  |  | — |  |  | 10,874 |
Asset transition fee (2) |  | 6,256 |  |  | — |  |  | — |  |  | 6,256 |
Other revenue |  | 24,522 |  |  | 523 |  |  | (157) |  |  | 24,888 |
Total revenue |  | 256,784 |  |  | 17,565 |  |  | (147) |  |  | 274,202 |
Expenses: |  |  |  |  |  |  |  |
Depreciation and amortization expense |  | 90,391 |  |  | 113 |  |  | — |  |  | 90,504 |
Cost of spare parts and equipment sales |  | 29 |  |  | 14,898 |  |  | — |  |  | 14,927 |
Write-down of equipment |  | 7,715 |  |  | — |  |  | — |  |  | 7,715 |
General and administrative |  | 72,333 |  |  | 3,027 |  |  | (10) |  |  | 75,350 |
Technical expense |  | 9,381 |  |  | — |  |  | — |  |  | 9,381 |
Net finance costs: |  |  |  |  |  |  |  |
Interest expense |  | 67,985 |  |  | — |  |  | — |  |  | 67,985 |
Total finance costs |  | 67,985 |  |  | — |  |  | — |  |  | 67,985 |
Total expenses |  | 247,834 |  |  | 18,038 |  |  | (10) |  |  | 265,862 |
Earnings (loss) from operations |  | $ | 8,950 |  |  | $ | (473) |  |  | $ | (137) |  |  | $ | 8,340 |

73

Table of Contents

For the Year ended December 31, 2020 |  | Leasing and Related Operations |  | Spare Parts Sales |  | Eliminations |  | Total
Revenue: |  |  |  |  |  |  |  |
Lease rent revenue |  | $ | 142,895 |  |  | $ | — |  |  | $ | — |  |  | $ | 142,895 |
Maintenance reserve revenue |  | 105,365 |  |  | — |  |  | — |  |  | 105,365 |
Spare parts and equipment sales |  | 1,514 |  |  | 17,514 |  |  | (403) |  |  | 18,625 |
Gain on sale of leased equipment |  | 3,391 |  |  | — |  |  | — |  |  | 3,391 |
Other revenue |  | 18,404 |  |  | 327 |  |  | (315) |  |  | 18,416 |
Total revenue |  | 271,569 |  |  | 17,841 |  |  | (718) |  |  | 288,692 |
Expenses: |  |  |  |  |  |  |  |
Depreciation and amortization expense |  | 94,442 |  |  | 99 |  |  | — |  |  | 94,541 |
Cost of spare parts and equipment sales |  | 156 |  |  | 16,606 |  |  | — |  |  | 16,762 |
Write-down of equipment |  | 20,540 |  |  | — |  |  | — |  |  | 20,540 |
General and administrative |  | 63,993 |  |  | 3,514 |  |  | 403 |  |  | 67,910 |
Technical expense |  | 6,533 |  |  | — |  |  | — |  |  | 6,533 |
Net finance costs: |  |  |  |  |  |  |  |
Interest expense |  | 63,024 |  |  | — |  |  | — |  |  | 63,024 |
Loss on debt extinguishment |  | 4,688 |  |  | — |  |  | — |  |  | 4,688 |
Total finance costs |  | 67,712 |  |  | — |  |  | — |  |  | 67,712 |
Total expenses |  | 253,376 |  |  | 20,219 |  |  | 403 |  |  | 273,998 |
Earnings (loss) from operations |  | $ | 18,193 |  |  | $ | (2,378) |  |  | $ | (1,121) |  |  | $ | 14,694 |

________________________
(1) Gain on sale of financial assets reflects the sales of two notes receivable during 2021.
(2) Asset transition fee reflects the settlement received from the close out of an engine transition program.

|  | Leasing and Related Operations |  | Spare Parts Sales |  | Eliminations |  | Total
Total assets as of December 31, 2021 |  | $ | 2,415,635 |  |  | $ | 47,292 |  |  | $ | — |  |  | $ | 2,462,927 |
Total assets as of December 31, 2020 |  | $ | 2,312,172 |  |  | $ | 52,776 |  |  | $ | — |  |  | $ | 2,364,948 |

17. Subsequent Event
On March 3, 2022, the Board appointed Austin C. Willis, currently a member of the Board and the Company’s Senior Vice President, Corporate Development, as the Company’s Chief Executive Officer, effective April 1, 2022.
In connection with the appointment of Austin C. Willis, Charles F. Willis, IV, the Chairman and Chief Executive Officer of the Company, notified the Board of his decision to step down as Chief Executive Officer, effective April 1, 2022. Charles F. Willis, IV will continue to serve as the Chairman of the Board and will assume the role of Executive Chairman on April 1, 2022.
On March 3, 2022, the Company entered into an employment agreement with Charles F. Willis IV in connection with his assumption of the role of Executive Chairman of the Board, effective as of April 1, 2022. The agreement provides that Charles F. Willis IV is entitled to an initial annual base salary of $1,097,000 and establishes his target annual bonus opportunity at 100% of his annual base salary. In addition, the agreement provides for a $1,000,000 signing bonus.
Also, on March 3, 2022, the Company entered into an employment agreement with Austin C. Willis in connection with his appointment as Chief Executive Officer of the Company, effective as of April 1, 2022. The agreement provides that Austin C. Willis is entitled to an initial annual base salary of $640,000 and establishes his target annual bonus opportunity at 90% of his annual base salary.
74

Table of Contents
WILLIS LEASE FINANCE CORPORATION AND SUBSIDIARIES
SCHEDULE II — VALUATION ACCOUNTS
(In thousands)

| Balance at Beginning of Period |  | Additions Charged (Credited) to Expense |  | Net (Deductions) Recoveries |  | Balance at End of Period
Year Ended December 31, 2020 |  |  |  |  |  |  |
Accounts receivable, allowance for doubtful accounts | $ | 1,730 |  |  | $ | 5 |  |  | $ | (363) |  |  | $ | 1,372 |
Deferred tax valuation allowance | $ | 153 |  |  | $ | 315 |  |  | $ | — |  |  | $ | 468 |
Year Ended December 31, 2021 |  |  |  |  |  |  |
Accounts receivable, allowance for doubtful accounts | $ | 1,372 |  |  | $ | (164) |  |  | $ | (54) |  |  | $ | 1,154 |
Deferred tax valuation allowance | $ | 468 |  |  | $ | 50 |  |  | $ | — |  |  | $ | 518 |

Deductions in allowance for doubtful accounts represent uncollectible accounts written off, net of recoveries.
75