| 1 | general aviation | GA |
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| 2 | go-around | G/A or GA |
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| 3 | ground-based, software tool | GBST |
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| 4 | Ground-controlled approach | GCA |
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| 5 | generator control unit | GCU |
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| 6 | Ground effect area | GEA |
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| 7 | g-induced loss of consciousness | GLOC |
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| 8 | guidance material (EASA) | GM |
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| 9 | general maintenance manual | GMM |
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| 10 | ground | GND |
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| 11 | glide path | GP |
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| 12 | general practices and procedures | GPP |
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| 13 | Global Positioning System | GPS |
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| 14 | Ground Power Unit | GPU |
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| 15 | ground proximity warning system | GPWS |
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| 16 | glideslope | G/S |
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| 17 | groundspeed | GS |
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| 18 | ground support equipment | GSE |
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| 19 | Gas, Undercarriage, Mixture, Propeller, Seat belts/Switches | GUMPS |
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