8/5/04 Pilot/Controller Glossary
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 Aeronautics 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 remuneration
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 POSITIONING SYSTEM (GPS)− A
space-base radio positioning, navigation, and timetransfer
system. The system provides highly accurate
position and velocity information, and precise time,
on a continuous global basis, to an unlimited number
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