gal  Gallon 
GALV  Galvanize 
GALY  Galley 
GAMMA-A  Slope 
GAMMA-T  Potential Slope 
GAPCU  Ground and Auxiliary Power Control Unit 
GATE  Glossary of Airbus Terms and Expressions 
GATT  General Agreement on Tariffs and Trade 
GCA  Ground-Controlled Approach System 
GCP  General Conditions of Purchase 
GCR  Generator Control Relay 
GCU  Generator Control Unit 
GDE  Guide 
GDNC  Guidance 
GDO  Ground Door Opening 
GDS  GSE Data Sheet 
GE  General Electric 
GEM  Ground Equipment Manual 
GEN  Generator 
GENL  General 
GES  Ground Earth Station 
GFI  Ground Fault Interruption 
GFTM  General Familiarization Training Manual 
GGPCU  Generator and Ground Power Control Unit 
GIC  General Instruction Card 
GIDOCA  Gestion Informatique de la Documentation Avion 
GIE  Groupement d'Intérêt Economique 
GIM  General Introduction Manual 
GIPSY  General Integrated Publication System 
GLASU  Galley Light Attendant Service Unit 
GLC  Generator Line Contactor 
GLM  General List of Modifications 
GLR  Generator Line Relay 
GLS  GNSS Landing System 
GLT  Ground Leak Test 
GMC  General Modification Committee 
GMR  Ground Movement Radar 
GMT  Greenwich Mean Time 
GMTBF  Guaranteed Mean Time Between Failure 
GND  Ground 
GNLU  GNSS Navigation and Landing Unit 
GNSS  Global Navigation Satellite System 
GP  Glide Path 
GPCU  Ground Power Control Unit 
GPM  General Processing Module