Reported engine systems (FAA SDR)

Engine - Turbine/Turboprop390
Engine Fuel & Control156
Engine Air49
Engine Indicating18
Engine Oil17
Engine Exhaust13
Power Plant8
Engine Controls8
Starting8
Ignition1
Other1

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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