ground-taxi Other expression for: taxi
ground-to-air communication
One-way communication from stations or locations on the surface of the earth to aircraft.
. see also: air-to-ground communication, air-ground communication
Fr: communications dans le sens sol-air
ground visibility In respect of an aerodrome, the visibility at that aerodrome as contained in a weather observation reported by
(a)
an ATC unit;
(b)
an FSS;
(c)
a community aerodrome radio station (CARS);
(d)
an automated weather observation system (AWOS) used by the Department of Transport, the Department of National Defence or the Atmospheric Environment Service for the purpose of making aviation weather observations; or
(e)
a radio station that is ground-based and operated by an air operator.
Fr: visibilité au sol
GS Abbreviation for: glide slope
. see: glide path (GP)
Fr: GS
“. . . guard” DND: An expression used in radiocommunications to indicate emergency frequency 243.0 MHz. Note: An example would be “Monitor guard.” Fr: fréquence d’urgence
H
HAA Abbreviation for: height above aerodrome Fr: HAA
HAL Abbreviation for: height above landing Fr: HAL
handoff The process of transferring the radar identification of an aircraft target and radio communications for that aircraft to another controller to ensure the uninterrupted provision of radar service. Fr: transfert
hang glider A motorless heavier-than-air aircraft deriving its lift from surfaces that remain fixed in flight, designed to carry not more than two persons and having a launch weight of 100 lb or less. Fr: aile libre
HAT Abbreviation for: height above touchdown
. see: height above touchdone zone elevation
Fr: HAT
“Have numbers” An expression used by pilots to indicate that they have received runway, wind and altimeter information only. Fr: . J’ai l’information .
Hazardous Inflight Weather Advisory Service U.S.: Continuous recorded hazardous inflight weather forecasts broadcasted to airborne pilots over selected VHF omnidirectional range (VOR) outlets defined as an HIWAS Broadcast Area.
. abbreviation: HIWAS
hazardous situation
In ATS usage, an occurrence in which flight safety was jeopardized or was not assured for a period of time.
Fr: situation dangereuse
HDG Abbreviation for: heading Fr: HDG
heading The direction in which the longitudinal axis of an aircraft is pointed, usually expressed in degrees from north (true, magnetic, compass or grid north).
. abbreviation: HDG
Fr: cap
heavier-than-air aircraft
An aircraft supported in the atmosphere by lift derived from aerodynamic forces.
Fr: aérodyne
height above aerodrome
The height in feet of the minimum descent altitude (MDA) above the published aerodrome elevation.
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