This is contractual money, not a negotiation
An aircraft purchase agreement is accompanied by a dense set of guarantees: new-aircraft warranties, engine performance and reliability guarantees, component MTBUR commitments, dispatch-reliability guarantees, spares-support undertakings and, often, bespoke concessions negotiated at order time. Repair orders carry their own workmanship warranties. Power-by-the-hour and component-support contracts contain service credits and rate-adjustment clauses.
Every one of these is an entitlement the airline has already paid for in the purchase price or support rate. Recovering it requires no negotiation leverage — only that the airline notices the entitlement exists, connects an event to it, and files a compliant claim inside the contractual window. That is precisely where the process breaks.
The entitlement lifecycle — and its weakest links
A recovery has to survive a long chain: the contract clause must be known; the triggering event (a premature removal, a reliability shortfall, a delayed delivery of spares) must be recognised as a trigger; the claim must be assembled with the right technical records; it must be submitted in time and in the required form; the OEM’s response must be chased; and the credit — often issued as a concession against future purchases rather than cash — must actually be applied and accounted for.
Each link sits with a different department. Contracts live with procurement or fleet management, often as scanned PDFs. Removal and reliability data live in the maintenance system. Claims administration may sit in a small warranty cell inside engineering. Credits arrive in finance, where they are matched — or not — against invoices. No single system sees the whole chain, and in most airlines no single manager does either.
The defining feature of lost warranty value is silence. A missed claim generates no invoice, no variance and no complaint — the money simply never arrives, and nothing in the ledger says it should have.
Where the process typically breaks
Across carriers, the same failure modes recur:
- Contract knowledge locked in documents. Entitlements negotiated at order time were never loaded into the maintenance or ERP system, so nothing flags a claimable event automatically.
- Premature removals not screened. Components removed well inside their expected life are repaired or scrapped without anyone asking whether the removal was claimable.
- Time-barred claims. Claims assembled correctly but submitted after the notification window — a pure process-speed loss.
- Repair-warranty blindness. A unit fails shortly after shop visit; it is inducted as a new repair event rather than a warranty return against the previous shop.
- Credits that evaporate. Concession credits issued by the OEM sit unapplied because accounts payable has no visibility of them, or they are netted invisibly into future invoices no one reconciles.
- Guarantee measurement never performed. Fleet-level guarantees (fuel burn, dispatch reliability, MTBUR) require the airline to measure performance against the guaranteed level. If no one runs the measurement, the shortfall is never established and nothing can be claimed.
Warning signs a CFO can check this quarter
You do not need a full review to sense whether value is leaking. Ask three questions. First: can anyone produce a single register of active warranties and guarantees across fleet, engines and components, with claim windows? If the answer involves several spreadsheets and a pause, coverage is partial at best. Second: what was claimed last year against each category — and does the pattern make sense against removal volumes? A busy fleet with negligible component claims is a signal, not a comfort. Third: how are OEM credits received, tracked and applied — and who reconciles them? If finance cannot answer without asking engineering, the loop is open.
What good control looks like
Airlines that recover well share a common architecture rather than a common system. Entitlements are abstracted out of contracts into a structured register at induction of every aircraft, engine and support agreement. Maintenance-system events are screened routinely — ideally automatically — against that register, so premature removals and repeat failures surface as candidate claims. A single accountable owner runs the claims pipeline with ageing visibility, the same way receivables are managed. And finance closes the loop: expected credits are recorded when claims are accepted, and unapplied credits are chased like any other debtor. Internal audit’s role is to test that chain end to end, from contract clause to applied credit, on a sample of real events — including events that should have become claims and did not.
Two design details repay attention. Recoveries should be visible in management reporting as their own line — buried inside net maintenance cost, a good recovery year and a bad one look identical, and the function that does the work gets no credit for it. And the register must survive people: when the one engineer who “knows the contracts” retires, the entitlement knowledge should be in the system, not in the leaving card.
Where to start
Start narrow and retrospective: take the last twelve months of premature component removals for one fleet and trace each against the applicable warranty terms. The exercise is bounded, the data exists, and it answers the only question that matters — whether claimable events are becoming claims. What it reveals about ownership and process gaps then shapes the wider fix.