AMP - Aviation Maintenance Technician Powerplant Practice Exam

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Who establishes the recommended operating time between overhauls (TBO) of a turbine engine used in general aviation?

  1. Engine manufacturer

  2. TBO does not apply to turbine engines

  3. Aircraft manufacturer

  4. Federal Aviation Administration (FAA)

The correct answer is: Engine manufacturer

The engine manufacturer establishes the recommended operating time between overhauls (TBO) of a turbine engine used in general aviation because they have designed and tested the engine to determine how long it can function efficiently and safely before needing maintenance. The TBO does not apply to turbine engines (B) because they are designed to operate at higher speeds and temperatures than piston engines. The aircraft manufacturer (C) may have their own recommendations for maintenance schedules, but they typically defer to the engine manufacturer for TBO guidelines. The Federal Aviation Administration (FAA) (D) does not establish TBO for specific engines, but they do require operators to follow the TBO guidelines set by the engine manufacturer for safe operation.

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