Aviation Maintenance Terms beginning with G

G/S

Glide Slope

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GAL or GALY

Galley

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GBAS

Ground Based Augmentation System

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GCR

Generator Control Relay Auxiliary Contact

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GCU

Generator Control Unit

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GEB

Generator Circuit Breaker

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GEN

Generator

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GHz (gigahertz)

1,000,000,000 cycles per second.

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GLR

Galley Load Relay

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GMAW

Gas Metal Arc Welding

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GMT

Greenwich Mean Time; Cordinated Universal Time

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GND or GRD

Ground

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GND PWR

Ground Power

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GND RET

Ground Return

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GND SVCE

Ground Service

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GNSS

Global Navigation Satellite System

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GNSS

Global Navigation Satellite System

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GNSS/IRS

Global Navigation Satellite System/Inertial Reference System

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GPCU

Ground Power Control Unit

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GPS

Global Positioning System

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GPS

Global Positioning System

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GPS

Global Positioning System

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GPSW

Gear Opposition Switch

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GPU

Ground power unit. A service component used to supply electrical power and compressed air to an aircraft when it is operating on the ground.

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GPU

Ground Power Unit

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GPW

Ground Proximity Warning

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GPWS

Ground Proximity Warning System

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GS

Glide slope.

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GSR

Ground Service Relay

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GSSR

Ground Service Select Relay

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GSTR

Ground Service Transfer Relay

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GTAW

Gas Tungsten Arc Welding

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GVA

Geometric Vertical Accuracy

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GWPC

Ground Proximity Warning Computer

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