FD Flight Director
FDR Flight Data Recorder
FF Fuel Flow
FH Flight Hours
FL Flight Level
FL Fuel
FLIR Forward Looking Infra Red
FLT Flight
FLT DIR Flight Director
FMCW Frequency Modulated Continuous Wave
FMM Fuel Management Module
FMS Flight Management System
FMV Fuel Management Valve
FOD Foreign Object Damage
FOG Fiber Optic Gyro
FOM Figure of Merit
FPL Flight Plan
FTR Force Trim Release
FWD Forward
GA Go-Around
GC Guidance Controller
GCU Generation Control Unit
GEN General
GEN Generator
GOV Governor (Engine)
GND Ground
GPS Global Positioning System
GR Gear
GS Glide Slope
GS Ground Speed
GSE Ground Support Equipment
GW Gross Weight
HCB Heating Control Box
Hd Density Altitude
HDG Heading
HDPH Head Phone
HDST Headset
HF High Frequency
HIL Horizontal Integrity Limit (GPS)
HOV Hover
Hp Pressure Altitude
HP High Pressure
HP Horse Power
HPA hecto Pascal (hPa)
HSI Horizontal Situation Indicator
HT Height
HTR Heater
HUMS Health and Usage Monitoring System
H-V Height - Velocity
HVR Hover
HYD Hydraulic