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Other intangibles, net (Tables)
12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Maintenance Rights and Lease Premiums
Maintenance rights and lease premium, net consisted of the following as of December 31, 2024 and 2023:
As of December 31,
20242023
Maintenance rights$1,669,742 $2,099,513 
Lease premium, net460,251 630,449 
$2,129,993 $2,729,962 
Movements in maintenance rights during the years ended December 31, 2024 and 2023 were as follows:
Year Ended December 31,
20242023
Maintenance rights at beginning of period$2,099,513 $2,540,286 
EOL and MR contract maintenance rights expense(144,726)(207,552)
MR contract maintenance rights write-off due to maintenance liability release(38,525)(17,747)
EOL contract maintenance rights write-off due to cash receipt(159,682)(102,940)
EOL and MR contract maintenance rights write-off due to sale of aircraft(86,838)(112,534)
Maintenance rights at end of period$1,669,742 $2,099,513 
The following tables present details of lease premium assets and related accumulated amortization as of December 31, 2024 and 2023:
As of December 31, 2024
Gross carrying
amount
Accumulated
amortization
Net carrying
amount
Lease premium$907,995 $(447,744)$460,251 
As of December 31, 2023
Gross carrying
amount
Accumulated
amortization
Net carrying
amount
Lease premium$1,002,293 $(371,844)$630,449 
Other intangibles consisted of the following as of December 31, 2024 and 2023:
As of December 31,
20242023
Customer relationships, net$134,883 $156,059 
Other intangible assets4,783 7,108 
$139,666 $163,167 
The following tables present details of customer relationships and related accumulated amortization as of December 31, 2024 and 2023:
As of December 31, 2024
Gross carrying
amount
Accumulated
amortization
Net carrying
amount
Customer relationships$360,000 $(225,117)$134,883 
As of December 31, 2023
Gross carrying
amount
Accumulated
amortization
Net carrying
amount
Customer relationships$360,000 $(203,941)$156,059