Engine flight cycle. The flight profile or combination of profiles on which the approved life is based.
To establish a safe life, the applicant needs to establish an appropriate flight profile (or combination of profiles) and consider the expected range of ambient conditions and operational variations to determine the service environment. The engine flight cycles should include the various flight segments that describe a complete flight (or flights). For example, for fixed wing aircraft applications this may include segments such as start, idle, taxi, takeoff, climb, cruise, approach, landing, thrust reverse and shutdown.