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FUEL SIPHONING- Unintentional release of fuel
caused by overflow, puncture, loose cap, etc.
FUEL VENTING-
(See FUEL SIPHONING.)
JO 7110.65S 2/14/08
-2
2/14/08 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
time‐transfer system. The system provides highly
accurate position and velocity information, and
precise time, on a continuous global basis, to an
unlimited number of properly equipped users. The
system is unaffected by weather, and provides a
worldwide common grid reference system. The GPS
concept is predicated upon accurate and continuous
knowledge of the spatial position of each satellite in
the system with respect to time and distance from a
transmitting satellite to the user. The GPS receiver
automatically selects appropriate signals from the
satellites in view and translates these into threedimensional
position, velocity, and time. System
accuracy for civil users is normally 100 meters
horizontally.
GO AHEAD- Proceed with your message. Not to be
used for any other purpose.
GO AROUND- Instructions for a pilot to abandon
his/her approach to landing. Additional instructions
may follow. Unless otherwise advised by ATC, a
VFR aircraft or an aircraft conducting visual
approach should overfly the runway while climbing
to traffic pattern altitude and enter the traffic pattern
via the crosswind leg. A pilot on an IFR flight plan
Pilot/Controller Glossary 2/14/08
PCG G-2
making an instrument approach should execute the
published missed approach procedure or proceed as
instructed by ATC; e.g., “Go around” (additional
instructions if required).
(See LOW APPROACH.)
(See MISSED APPROACH.)
GPD-
(See GRAPHIC PLAN DISPLAY.)
GPS-
(See GLOBAL POSITIONING SYSTEM.)
GRAPHIC PLAN DISPLAY (GPD)- A view
available with URET that provides a graphic display
of aircraft, traffic, and notification of predicted
conflicts. Graphic routes for Current Plans and Trial
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