Glossary

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Gallon (UK): Liquid volume equal to 8 pints or 4.54 ltrs.

Gallon (US): Liquid volume equal to 0.83 UK gallon or 3.79 ltrs.

Gate: A point of access to the apron from the terminal at an airport.

Gate hold procedure: A procedure to hold aircraft at the gate or other ground location whenever departures are expected to be delayed by more than five minutes.

Gateway airport: See Airport, gateway.

GPU: See Ground Power Unit.

Green Aircraft: See Aircraft, green.

Ground crew: See Crew, ground.

Ground Power Unit: Equipment used to power to an aircraft to run vital services while stationary on the ground.

Ground support equipment: All the handling facilities employed to service an aircraft at an airport - such as tractors, steps, fuelling tanks, food and cleaning supplies.