Acronyms

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G

Acronym	Meaning	Source
G	Gravity
G	Green	AIS
G-G	Governor-General
G/A	Ground-to-air	ICAO
G/A/G	Ground-to-air and air-to-ground	ICAO
GA	Go ahead, resume sending (to be used in AFS as a procedure signal)	ICAO
GA	General Aviation	CAR 1988
GAAP	General Aviation Aerodrome Procedures	AIS
GAMET	Area forecast for low-level flights	ICAO
GAOG	CASA's General Aviation Operations Group	CASA
GAPAN	Guild of Air Pilots and Navigators
GBAS	Ground Based Augmentation System
GCA	Ground Controlled Approach	AIS
GCN	General Computing Network (operated by Airservices Australia)	AIS
GDOP	Geometric Dilution of Precision
GEN	General	AIS
GEO	Geographic, true	AIS
GES	Ground Earth Station	AIS
GFA	The Gliding Federation of Australia
GFY	Glider Flying	AIS
GHA	Ground handling agents
GIVD	Gravity Induced Vestibular Dysfunction
GLD	Glider	AIS
GLOC	Gravity Induced Loss of Consciousness
GLONASS	Global Orbiting Navigation Satellite System (pronounced 'GLO-NAS')	AIS
GM	Guidance Material
GMC	Ground Movement Chart (followed by name/title)	AIS
GND	Ground	AIS
GNDCK	Ground Check	AIS
GNS	Global Navigation System	AIS
GNSS	Global navigation satellite system	ICAO/AIP
GP	Guiding principles	CAR 1998
GP	Glide Path	ICAO/AIP
GP	FLG Group Flashing (number) (used in conjunction with aerodrome lighting)	AIS
GPI	Glide Path Intercept	AIS
GPS	Global positioning system (see GNSS)
GPWS	Ground proximity warning system
GR	Hail	AIS
GRAD	Minimum Required Climb Gradient	AIS
GRAS	Ground Based Regional Augmentation System
GRASS	Grass Landing Area	AIS
GRIB	Processed meteoroglogical data in the form of grid point values expressed in binary form (aeronautical meterological code)	ICAO/AIP
GRVL	Gravel	AIS
GS	Groundspeed	AIS
GS	Small Hail and/or Snow Pellets	AIS
GSE	Ground Support Equipment	WATOG
GUND	Geoid Undulation	AIS