| Schedule of Maintenance Rights and Lease Premiums |
Maintenance rights and lease premium, net consisted of the following as of December 31, 2025 and 2024: | | | | | | | | | | | | | As of December 31, | | 2025 | | 2024 | | Maintenance rights | $ | 1,336,440 | | | $ | 1,669,742 | | | Lease premium, net | 340,967 | | | 460,251 | | | $ | 1,677,407 | | | $ | 2,129,993 | |
The following tables present details of lease premium assets and related accumulated amortization as of December 31, 2025 and 2024: | | | | | | | | | | | | | | | | | | | As of December 31, 2025 | | Gross carrying
amount | | Accumulated
amortization | | Net carrying
amount | | Lease premium | $ | 790,042 | | | $ | (449,075) | | | $ | 340,967 | |
| | | | | | | | | | | | | | | | | | | As of December 31, 2024 | | Gross carrying
amount | | Accumulated
amortization | | Net carrying
amount | | Lease premium | $ | 907,995 | | | $ | (447,744) | | | $ | 460,251 | |
Other intangibles consisted of the following as of December 31, 2025 and 2024: | | | | | | | | | | | | | | | | | As of December 31, | | | 2025 | | 2024 | | Customer relationships, net | | $ | 113,706 | | | $ | 134,883 | | | Other intangible assets | | 4,083 | | | 4,783 | | | | $ | 117,789 | | | $ | 139,666 | |
The following tables present details of customer relationships and related accumulated amortization as of December 31, 2025 and 2024: | | | | | | | | | | | | | | | | | | | As of December 31, 2025 | | Gross carrying
amount | | Accumulated
amortization | | Net carrying
amount | | Customer relationships | $ | 360,000 | | | $ | (246,294) | | | $ | 113,706 | |
| | | | | | | | | | | | | | | | | | | As of December 31, 2024 | | Gross carrying
amount | | Accumulated
amortization | | Net carrying
amount | | Customer relationships | $ | 360,000 | | | $ | (225,117) | | | $ | 134,883 | |
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| Schedule of Movements in Maintenance Rights Intangible |
Movements in maintenance rights during the years ended December 31, 2025 and 2024 were as follows: | | | | | | | | | | | | | Year Ended December 31, | | 2025 | | 2024 | | Maintenance rights at beginning of period | $ | 1,669,742 | | | $ | 2,099,513 | | | EOL and MR contract maintenance rights expense | (71,103) | | | (144,726) | | | MR contract maintenance rights write-off due to maintenance liability release | (19,544) | | | (38,525) | | | EOL contract maintenance rights write-off due to cash receipt | (67,412) | | | (159,682) | | | EOL and MR contract maintenance rights write-off due to sale of aircraft | (175,243) | | | (86,838) | | | Maintenance rights at end of period | $ | 1,336,440 | | | $ | 1,669,742 | |
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| Schedule of Estimated Future Amortization Expense |
As of December 31, 2025, the estimated future amortization expense for lease premium assets was as follows: | | | | | | | Estimated amortization expense | | 2026 | $ | 103,099 | | | 2027 | 86,966 | | | 2028 | 72,877 | | | 2029 | 37,128 | | | 2030 | 25,740 | | | Thereafter | 15,157 | | | $ | 340,967 | |
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