.
see also: global navigation satellite system (GNSS)

Fr: système mondial de satellites de navigation
global positioning system A navigation system based on the transmission of signals from satellites provided and maintained by the United States of America and available to civil aviation users.
.
abbreviation: GPS

.
see also: global navigation satellite system (GNSS)

Fr: système de positionnement mondial
GLONASS Abbreviation for: global orbiting navigation satellite system Fr: GLONASS
GNSS Abbreviation for: global navigation satellite system Fr: GNSS
“Go ahead” An expression used in radiocommunication meaning “Proceed with your message.” Note: This expression should not be used in surface movement communications whenever the possibility exists of misconstruing “Go ahead” as an authorization for an aircraft or a vehicle to proceed. Fr: . Continuez .
“Go around”
An expression used in radiocommunications to instruct a pilot to abandon an approach or landing.
Fr: . Remettez les gaz .
go-around
The procedure followed by a pilot who decides to abandon an approach or landing.
Fr: remise des gaz
GP Abbreviation for: glide path Fr: GP
GPS Abbreviation for: global positioning system Fr: GPS
ground-based augmentation system ICAO: Expression for: local area augmentation system (LAAS)
. abbreviation: GBAS
ground control
An ATC service provided for the purpose of:
(a)
preventing collisions on the manoeuvring area between aircraft and between aircraft and obstacles or vehicles; and

(b)
expediting and maintaining an orderly flow of aircraft operating on the manoeuvring area.

Fr: contr.le sol
ground controlled approach A radar approach controlled from the ground by ATC personnel who transmit instructions to the pilot by radio. Note: In Canada, this service is provided by military ATC.
.
abbreviation: GCA

.
see also: precision radar approach

Fr: approche contr.lée du sol
ground controller
A duty controller assigned to the ground control position in an airport control tower.
Fr: contr.leur sol
ground effect The aerodynamic force caused by the reduction of induced drag and resulting in an increase in normal lift for an aircraft flying in close proximity to the surface of the ground or water. Fr: effet de sol
ground return
The desired echoes received from the ground by an airborne radar.
Fr: écho de sol
groundside The area of an aerodrome not intended to be used for activities related to aircraft operations and to which the public normally has unrestricted access. Fr: c.té ville