| Abbreviation | Definition |
|---|---|
| GBAA | German Business Aviation Association |
| GBAS | Ground Based Augmentation System |
| GBIA | Grand Bahama International Airport |
| GBST | Ground Based Software Tool |
| GCA | Ground Controlled Approach |
| GCAS | Gulf Centre for Aviation Studies |
| GCB | Generator Control Breaker |
| GCR | Generator Control Relay |
| GCU | Galley Cooling Unit |
| GCU | Generator Control Unit |
| GDCA | General Department of Civil Aviation |
| GEnx | General Electric Engine Designation |
| GET | Ground Elapsed Time |
| GFA | Glider Flight Activities |
| GFA | Glider Flight Activity |
| GFA | Graphical Forecasts for Aviation |
| GFD | Guided Flight Discovery |
| GFI | Ground Fault Interrupter |
| GFPT | General Flying Progress Test |
| GFRP | Fiberglas Fiber Reinforced Plastic |