alternate aerodrome An aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or land at the aerodrome of intended landing. Alternate aerodromes include the following:
(a)
take-off alternate aerodrome
(b)
en-route alternate aerodrome
(c)
destination alternate aerodrome Note: The aerodrome from which a flight departs may also be an en-route or a destination alternate aerodrome for that flight.
Fr: aérodrome de dégagement
altimeter setting The barometric pressure reading used to adjust a pressure altimeter for variations in existing atmospheric pressure or to the standard altimeter setting (29.92 in. of mercury). Fr: calage altimétrique
altimeter setting region
(1) All low level airspace (LLA) within the Southern Domestic Airspace (SDA).
Fr: région de calage altimétrique
(2) DND: A designated area within which aircraft shall use the altimeter setting of the nearest station along the route of flight.
Fr: région de calage altimétrique
altitude
(1) The vertical distance of a level, a point or an object considered as a point, measured from mean sea level.
. abbreviation: ALT
Fr: altitude
(2) Other expression for: indicated altitude
altitude above ground level
The altitude expressed in feet measured above ground level.
Fr: altitude au-dessus du sol
altitude above sea level
The altitude expressed in feet measured above sea level.
Fr: altitude au-dessus du niveau de la mer
altitude readout
Altitude information displayed in a digital target tag, a hold list or a suspend list.
Fr: affichage d’altitude
altitude readout value
The altitude figures currently displayed in an altitude readout.
Fr: chiffres d’affichage d’altitude
altitude reservation An airspace of defined dimensions within controlled airspace, reserved for the use of a civil or military agency during a specified period. An altitude reservation may be confined to a fixed area (stationary) or moving in relation to the aircraft that operate within it (moving).
. abbreviation: ALTRV
Fr: réservation d’altitude
altitude reservation service The service provided by the altitude reservation East (Gander) and the altitude reservation West (Edmonton) in co-ordination with area control centres (ACC) in providing reserved altitude for specified air operations in controlled airspace, and in providing information concerning these reservations and military activity areas in controlled and uncontrolled airspace. Fr: service de réservation d’altitude
altitude reservation service East
Central co-ordinating agencies of the NAV CANADA altitude reservation service for eastern Canada.
. abbreviation: ARE
Fr: service de réservation d’altitude est
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