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Pilot/Controller Glossary 

G 

GATE HOLD PROCEDURES

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 Procedures at selected airports to hold aircraft at the gate or other ground 

location whenever departure delays exceed or are anticipated to exceed 15 minutes. The sequence for departure 

will be maintained in accordance with initial call

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up unless modified by flow control restrictions. Pilots should 

monitor the ground control/clearance delivery frequency for engine start/taxi advisories or new proposed 

start/taxi time if the delay changes. 
GCA

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(See GROUND CONTROLLED APPROACH.) 

GDP

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(See GROUND DELAY PROGRAM.) 

GENERAL AVIATION

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 That portion of civil aviation that does not include scheduled or unscheduled air 

carriers or commercial space operations. 

(See ICAO term GENERAL AVIATION.) 

GENERAL AVIATION [ICAO]

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All civil aviation operations other than scheduled air services and 

nonscheduled air transport operations for remuneration or hire. 
GEO MAP

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 The digitized map markings associated with the ASR-9 Radar System. 

GLIDEPATH

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(See GLIDESLOPE.) 

GLIDEPATH [ICAO]

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 A descent profile determined for vertical guidance during a final approach. 

GLIDEPATH INTERCEPT ALTITUDE

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(See GLIDESLOPE INTERCEPT ALTITUDE.) 

GLIDESLOPE

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 Provides vertical guidance for aircraft during approach and landing. The glideslope/glidepath 

is based on the following: 

a. 

Electronic components emitting signals which provide vertical guidance by reference to airborne 

instruments during instrument approaches such as ILS; or, 

b. 

Visual ground aids, such as VASI, which provide vertical guidance for a VFR approach or for the visual 

portion of an instrument approach and landing. 

c. 

PAR. Used by ATC to inform an aircraft making a PAR approach of its vertical position (elevation) relative 

to the descent profile. 

(See ICAO term GLIDEPATH.) 

GLIDESLOPE INTERCEPT ALTITUDE

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 The published minimum altitude to intercept the glideslope in the 

intermediate segment of an instrument approach.  Government charts use the lightning bolt symbol to identify 

this intercept point. This intersection is called the Precise Final Approach fix (PFAF). ATC directs a higher 

altitude, the resultant intercept becomes the PFAF. 

(See FINAL APPROACH FIX.) 
(See SEGMENTS OF AN INSTRUMENT APPROACH PROCEDURE.) 

GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS)

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 GNSS refers collectively to the worldwide 

positioning, navigation, and timing determination capability available from one or more satellite constellations. 

A GNSS constellation may be augmented by ground stations and/or geostationary satellites to improve integrity 

and position accuracy. 

(See GROUND

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BASED AUGMENTATION SYSTEM.) 

(See SATELLITE

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BASED AUGMENTATION SYSTEM.) 

PCG G

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