Aviation Maintenance Terms beginning with F

FAA

Federal Aviation Administration.

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FAA-PMA

Federal Aviation Administration Parts Manufacturer Approval

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FADEC

Full-authority digital electronic control. A digital electronic fuel control for a gas turbine engine that is functioning during all engine operations, hence full authority. It includes the EEC (see EEC) and functions with the flight management computer. FADEC schedules the fuel to the nozzles in such a way that prevents overshooting power changes and over-temperature conditions. FADEC furnishes information to the EICAS (engine indication and crew alerting system).

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FCC

Federal Communications Commission.

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FCU

Flight Control Unit

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FEP

Fluorinated ethylene propylene (commonly known by the trade name, Teflon™). A melt extrudable fluorocarbon resin, very similar in appearance and performance to PTFE, but with a maximum temperature rating of 200 °C.

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FHA

Functional Hazard Assessment

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FHP

Friction horsepower. The amount of horsepower used to turn the crankshaft, pistons, gears, and accessories in a reciprocating engine and to compress the air inside the cylinders.

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FIS-B

Flight Information Services - Broadcast

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FM

Frequency Modulation

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FM/CW

Frequency Modulation Continuous Wave

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FMC

Flight management computer. An electronic flight instrumentation system that enables the flight crew to initiate and implement a given flight plan and monitor its execution.

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FMCD

Flight Management Computer Control Display Unit

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FMCS

Flight Management Computer System

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FMS

Flight Management System

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FOD

Foreign object damage. Damage to components in the gas path of a turbine engine, caused by ingested objects. Debris from the runway or ramp cause FOD on the ground. Ice and birds cause most in-flight FOD.

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FPD

Freezing point depressant.

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fpm

Feet Per Minute

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FREQ

Frequency

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FSEU

Flap/Slat Electronic Unit

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ft

Feet

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FW or FWD

Forward

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