Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task B. Turbine Engines

AM.III.B.S13

Skill

Inspect the first two stages of a turbine fan or compressor for foreign object damage.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Pilot's Handbook of Aeronautical Knowledge p. 7-23
Chapter 7: Aircraft Systems › Turbine Engines › Thrust Variations
procedures, but there are certain operational considerations common to all turbine engines. They are engine temperature limits, foreign object damage, hot start, compressor stall, and flameout. Engine Temperature Limitations The highest temperature in any turbine engine occurs at the turbine…
Pilot's Handbook of Aeronautical Knowledge p. 7-23
Chapter 7: Aircraft Systems › Turbine Engines › Foreign Object Damage (FOD)
Foreign Object Damage (FOD) Due to the design and function of a turbine engine’s air inlet, the possibility of ingestion of debris always exists. This causes significant damage, particularly to the compressor and turbine sections. When ingestion of debris ... occurs, it is called foreign object damage (FOD). Typical FOD consists of small nicks and dents caused by ingestion of small objects from the ramp, taxiway, or runway, but FOD damage caused by bird strikes or ice ingestion also occur…
Aviation Maintenance Technician Handbook - General p. 1-15
Chapter 1: Safety, Ground Operations, & Servicing › Ground Movement of Aircraft › Starting a Turbofan Engine
inlet for general condition and the presence of foreign objects. Visually inspect the fan blades, forward compressor blades, and the compressor inlet guide vanes for nicks and other damage. If possible, check the fan blades for free rotation by turning…