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Aviation
Aviation, aircraft and air-traffic acronyms explained.
FISDL
Flight Information Services Data Link
FLIP
Flight Information Publication
FMS
Flight Management System
FO
Fly-over
FPA
Flight Path Angle
FPNM
Feet Per Nautical Mile
FPV
Flight Path Vector
FRIA
FAA-Recognized Identification Area
FSDO
Flight Standards District Office
FSS
Flight Service Station
GBAS
Ground Based Augmentation System
GEO
Geostationary Satellite
GLS
GBAS Landing System
GNSS
Global Navigation Satellite System
GNSSP
Global Navigation Satellite System Panel
GPS
Global Positioning System
GRI
Group Repetition Interval
GSD
Geographical Situation Display
GUS
Ground Uplink Station
HAT
Height Above Touchdown
HAZMAT
Hazardous Material
HDTA
High Density Traffic Airports
HEMS
Helicopter Emergency Medical Services
HIRL
High Intensity Runway Lights
HRR
Helicopter Rapid Refueling Procedures
HUD
Head-Up Display
IAF
Initial Approach Fix
IAP
Instrument Approach Procedure
IAS
Indicated Air Speed
IAWP
Initial Approach Waypoint
IC
Initial Contact
ICAO
International Civil Aviation Organization
specialized agency of the United Nations, coordinates the international civil aviation regulations and policy
IF
Intermediate Fix
IFR
Instrument Flight Rules
ILS
Instrument Landing System
ground-based visual aid for landing
ILS/PRM
Instrument Landing System/Precision Runway Monitor
IM
Inner Marker
IMC
Instrument Meteorological Conditions
aviation flight category
InFO
Information For Operators
INS
Inertial Navigation System