GA Abbreviation for: general aviation Fr: GA
GASA Canada: Abbreviation for: geographic area safe altitude Fr: GASA
gate hold procedure A procedure at selected airports to hold aircraft at the gate or another ground location whenever departure delays exceed or are anticipated to exceed 15 min. The sequence for departure will be maintained in accordance with initial call-up unless modified by flow control restrictions. Pilots should monitor ground control and clearance delivery frequencies for engine start-up advisories or a new proposed start time if the delay changes. Fr: procédure d’attente à la barrière
gate time For the application of flow control procedures, the original estimated time of arrival (ETA) of the aircraft over the metering fix. Fr: heure à la porte de minutage
GBAS ICAO: Abbreviation for: ground-based augmentation system
. see: local area augmentation system (LAAS)
Fr: GBAS
GCA Abbreviation for: ground controlled approach Fr: GCA
GCA controller
A duty controller assigned to a ground controlled approach position.
Fr: contr.leur GCA
general aviation All civil aviation operations other than scheduled air services and non-scheduled air transport operations for remuneration or hire.
. abbreviation: GA
Fr: aviation générale
geographic area safe altitude  Canada: The altitude at which an aircraft can fly and maintain a 2000-ft clearance over known obstacles or terrain within a delineated geographic area, as depicted on en route charts.
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abbreviation: GASA
Note: This term was replaced by the term area minimum altitude (AMA) on April 18, 2002.

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see also: area minimum altitude (AMA)

Fr: altitude de sécurité de région géographique
glide path
A descent profile determined for vertical guidance during a final approach segment.
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abbreviation: GP

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also called: glide slope (GS)

Fr: alignement de descente
glider A non-power-driven heavier-than-air aircraft that derives its lift in flight from aerodynamic reactions on surfaces that remain fixed during flight. Fr: planeur
glide slope Other expression for: glide path (GP)
. abbreviation: GS
global navigation satellite system  Any navigation system that satisfies stated international navigational requirements using satellite technology. A complete GNSS may include satellites provided by various states and commercial groups and may be complemented by ground systems used to augment and monitor the satellites. 
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abbreviation: GNSS

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see also: global orbiting navigation satellite system (GLONASS) and global positioning system (GPS)

Fr: système mondial de navigation par satellite