Grizzly Bulls
Financial research concept

Aircraft Lessor Net Gain on Sale of Assets

measures the accounting gain recognized when an aircraft lessor sells flight equipment, providing evidence about residual-value realization but with timing and mix that can make periods lumpy.

By Lee BaileyPublished Sep 28, 2026
Research context

See what supports this page, how current it is, and where comparable or historical context is available.

Research date
Sep 28, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context
13 connected conceptsPart of the reviewed Aircraft Leasing Economics; issuer definitions remain distinct where disclosed.
Company examples
1 reviewed companyRelationships reflect supported examples, not a normalized cross-company KPI ranking.
  1. Sale gains test residual-value assumptions in the real market
  2. A strong sales year isn't a recurring margin forecast
  3. Part of the Aircraft Leasing Economics
  4. See It in Company Research
  5. Continue Research

Aircraft lessor net gain on sale of assets is the accounting gain recognized when flight equipment is sold above its relevant carrying value after the applicable sale accounting. AerCap reported a record $819M net gain on sale of assets in 2025, up from $651M in 2024. The company sold $3.9B of assets during the year and separately reported a 27% unlevered gain-on-sale margin under its own presentation.

Sale gains test residual-value assumptions in the real market

A lessor earns recurring rent while it owns an aircraft, but the exit price is another part of the investment outcome. Gains on sale can provide evidence that market values are above book carrying values for the assets actually sold.

AerCap says the result depends on aircraft condition, interest rates, airline market conditions, and supply and demand for the specific asset type.

That makes the measure economically connected to weighted average fleet age, but not reducible to age alone.

A strong sales year isn't a recurring margin forecast

Asset-sale closings are lumpy. AerCap warns that negotiations can close quickly or stretch over weeks or months, so a single reporting period may contain significantly more or fewer sale transactions than another.

Portfolio mix matters too. Selling older aircraft, engines, helicopters, or other equipment can produce a different gain profile even if total proceeds are similar.

Asset sales also reshape future lease earnings. When an aircraft is sold, the lessor may give up future basic lease rents in exchange for cash and a realized residual-value outcome. Sale proceeds can then fund new deliveries, debt reduction, or other capital allocation.

For that reason, gain on sale belongs in a fleet-cycle analysis, not in the recurring lease-spread numerator.

Primary sources: AerCap 2025 Form 20-F and AerCap full-year 2025 results.

Part of the Aircraft Leasing Economics

Connect aircraft deployment and recurring lease revenue with financing spread, depreciation, maintenance obligations, residual-value realization, and fleet renewal.

Browse the full operating model in Company Analysis →
Where this concept fits
  • Fleet renewal and residual-value realizationCurrent relationship
    The order book supplies the future aircraft pipeline, value-weighted fleet age shows how renewal changes the owned passenger portfolio, and gains on asset sales show realized residual-value outcomes from aircraft and other flight-equipment disposals.
    Aircraft Order BookNet Gain on Sale of AssetsCurrent conceptWeighted Average Fleet Age
  • Asset deployment, recurring rent, and financing spread
    Utilization shows how much owned aircraft value is deployed, basic and maintenance rents separate recurring lease economics from maintenance-related receipts, average lease assets supply the capital denominator, and the two net-spread measures show financing economics before and after depreciation and amortization.
    Annualized Net SpreadAverage Lease AssetsBasic Lease RentsMaintenance RentsNet Spread After DepreciationOwned Aircraft Utilization
  • Maintenance condition and acquired-lease accounting
    Maintenance rights capture acquired contractual maintenance condition, accrued maintenance liabilities capture timing and reimbursement obligations, end-of-lease compensation settles aircraft condition at redelivery, and lease premium captures acquired above-market rents that are amortized against lease revenue.
    Accrued Maintenance LiabilityEnd-of-Lease CompensationLease PremiumMaintenance Rights

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