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Flight equipment held for operating leases, net
 12 Months Ended
Dec. 31, 2021
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Abstract]  
Flight equipment held for operating leases, net Flight equipment held for operating leases, net
Movements in flight equipment held for operating leases during the years ended December 31, 2021 and 2020 were as follows:
Year Ended December 31,
20212020
Net book value at beginning of period$35,156,450 $35,870,781 
GECAS Transaction23,108,835 — 
Additions2,368,677 2,108,539 
Depreciation(1,712,991)(1,620,185)
Disposals and transfers to held for sale(955,028)(169,503)
Transfers to investment in finance leases, net(12,478)(46,623)
Impairment (Note 25)(128,409)(986,559)
Net book value at end of period$57,825,056 $35,156,450 
Accumulated depreciation and impairment as of December 31, 2021 and 2020, respectively:$(11,201,741)$(9,825,647)