Pilot/Controller Glossary

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PCG G−1

G

GATE HOLD PROCEDURES− 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-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.

GBT−

(See GROUND

−

BASED TRANSCEIVER.)

GCA−

(See GROUND CONTROLLED APPROACH.)

GDP−

(See GROUND DELAY PROGRAM.)

GENERAL AVIATION− That portion of civil

aviation which encompasses all facets of aviation

except air carriers holding a certificate of public

convenience and necessity from the Civil Aeronau-

tics Board and large aircraft commercial operators.

(See ICAO term GENERAL AVIATION.)

GENERAL AVIATION [ICAO]− All civil aviation

operations other than scheduled air services and

nonscheduled air transport operations for remunera-

tion or hire.

GEO MAP− The digitized map markings associated

with the ASR-9 Radar System.

GLIDEPATH−

(See GLIDESLOPE.)

GLIDEPATH [ICAO]− A descent profile determined

for vertical guidance during a final approach.

GLIDEPATH INTERCEPT ALTITUDE−

(See GLIDESLOPE INTERCEPT ALTITUDE.)

GLIDESLOPE− 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/MLS, 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− The

minimum altitude to intercept the glideslope/path on

a precision approach. The intersection of the

published intercept altitude with the glideslope/path,

designated on Government charts by the lightning

bolt symbol, is the precision FAF; however, when the

approach chart shows an alternative lower glideslope

intercept altitude, and ATC directs a lower altitude,

the resultant lower intercept position is then the FAF.

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

APPROACH PROCEDURE.)

GLOBAL NAVIGATION SATELLITE SYSTEM

(GNSS) [ICAO]− GNSS refers collectively to the

worldwide positioning, navigation, and timing

determination capability available from one or more

satellite constellation in conjunction with a network

of ground stations.
GLOBAL NAVIGATION SATELLITE SYSTEM

MINIMUM EN ROUTE IFR ALTITUDE (GNSS

MEA)− The minimum en route IFR altitude on a

published ATS route or route segment which assures

acceptable Global Navigation Satellite System

reception and meets obstacle clearance requirements.

(Refer to 14 CFR Part 91.)

(Refer to 14 CFR Part 95.)
GLOBAL POSITIONING SYSTEM (GPS)− 

GPS

refers to the worldwide positioning, navigation

and timing determination capability available

from the U.S. satellite constellation.  The service

provided by GPS for civil use is defined in the

GPS Standard Positioning System Performance

Standard.  GPS is composed of space, control,

and user elements.

GNSS [ICAO]−

(See 

GLOBAL NAVIGATION SATELLITE

SYSTEM

.)