Why the next engine shop visit is decided years before it happens
· Fletaris team
Life-limited parts set hard limits on an engine’s time on wing. For a lessor, those limits meet the lease return conditions long before the engine comes off.
Some engine parts, mostly rotating parts such as discs and shafts, have a hard life limit counted in cycles. When a part reaches its limit, it must be replaced, whatever its condition. These life-limited parts are among the most expensive items in a shop visit.
Because each part has its own limit and its own history, the stack of parts in an engine runs out unevenly. The part with the least life left often sets the date of the next shop visit, unless performance or a finding brings it forward.
Where the lease comes in
Many leases set a minimum remaining life for engines and their life-limited parts at return, or a compensation if the engine comes back below it. Whether an engine meets that condition on the return date depends on how many cycles it will fly before then, and on when its last shop visit was.
That makes the shop visit plan a lease question as much as a maintenance one. A visit done just before return can satisfy the condition at a high cost; a visit deferred past return can move the cost to the lessor through compensation, or the other way round.
Seeing it early
All of this can be projected from the records: the cycles left on each part, the expected utilisation, and the return conditions that apply. Projected forward, the records show which engines will fall short of their return condition, roughly when, and what closing the gap is likely to cost.
Fletaris projects life-limited parts, checks and shop visits from the records and prices them, so a lessor can see which engines need a decision, and when, while every option is still open.
Fletaris reads the records lessors already keep and shows what each aircraft will need, cost and owe in the months ahead. It does not audit those records; it turns them into foresight. See Fletaris Air
