Reported engine systems (FAA SDR)

Engine - Turbine/Turboprop2,525
Engine Fuel & Control1,482
Engine Air484
Engine Indicating356
Ignition141
Starting131
Engine Oil126
Engine Exhaust78
Power Plant54
Engine Controls28
Other12

Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).

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