FDDI Fiber Distributed Data Interface
FDE Fault Detection and Exclusion
FDEP Flight Data Entry Panel
FDH Flight Deck Handset
FDI Fault Detection and Isolation
FDM Frequency Division Multiplex is a system where the
messages are transmitted over a common path by
employing a different frequency band for each signal.
FDMA Frequency Division Multiple Access
FDR Flight Data Recorder
FDRS Flight Data Recorder System
FEATS Future European Air Traffic Management System
FEC Forward Error Correction
FF (1) Free Flight
(2) Flitefone
FGC Flight Guidance Computer
FHA Fault Hazard Analysis
FHW Fault History Word
FIFO First In, First Out
FIR Flight Information Region
FIS Flight Information Service
FL (1) Foot Lambert
(2) Flight Level (as in FL410). This terminology is
used to describe aircraft attitude when the altimeter
is set at QNE.
FLCH Flight Level Change
FLIR Forward Looking Infra-red Radiometer
FLOPAC IATA Flight Operations Advisory Sub-Committee
FLPRN Flaperon
FLRE Flare
FLT Flight
FLT CTRL Flight Control
FLT INST Flight Instrument
FLW Forward Looking Windshear Radar
FM Frequency Modulation
FMA Flight Mode Annunciator
FMC (1) Flight Management Computer (FMCS)
(2) Flight Director Control (FD)
FMCF Flight Management Computer Function
FMCS Flight Management Computer System
FMCW Frequency-Modulated Continuous Wave
FMEA Failure Mode and Effects Analysis
FMP Flight Mode Panel
FMS Flight Management System
FMSG ICAO’s Frequency Management Study Group
FMU Fuel Metering Unit
FNS FAA Nav Sat
F/O (1) First Officer
(2) Fuel/Oil Cooler
FOC (1) Full Operational Capability
(2) Fuel/Oil Cooler
FOM Figure of Merit
FPA Flight Path Angle
FPAC Flight Path Acceleration
FPC Flight Profile Comparator
FPGA Field Programmable Gate Array
FPM Feet Per Minute
FPV Flight Path Vector
FQIS Fuel Quantity Indicating System
FQPU Fuel Quantity Processor Unit
Framing A pulse that is used to mark the beginning or end of
| 
