Canadian Aviation Regulations — 101.01
respect of an aircraft; ( manuel de vol de l’aéronef ) airport means an aerodrome in respect of which an airport certificate issued under Subpart 2 of Part III is in force; ( aéroport ) airship means a power-driven, lighter-than-air aircraft; ( dirigeable ) airway means the controlled airspace identified as such within the boundaries or along the tracks specified in the Designated Airspace Handbook ; ( voie aérienne ) airworthiness directive means an instruction issued by the Minister or by a civil aviation authority responsible for an aeronautical product type design that mandates a maintenance or operation action to ensure that an aeronautical product conforms to its type design and is in a condition for safe operation; ( consigne de navigabilité ) airworthiness limitation means a limitation applicable to an aeronautical product, in the form of a life limit or a maintenance task that is mandatory as a condition of the type certificate; ( limite de navigabilité ) airworthy , in respect of an aeronautical product, means in a fit and safe state for flight and in conformity with its type design; ( en état de navigabilité ) alert height means the height above a runway, based on the flight characteristics of an aircraft and its fail-operational automatic landing system, above which a CAT III precision approach is to be discontinued and a missed approach procedure initiated in the event of a failure of the ground equipment or one of the redundant parts of the aircraft automatic landing system; ( hauteur d’alerte ) all-engines-operating take-off distance means the distance from the start of the take-off roll to the point at which the aeroplane reaches the height above the runway elevation specified in the certification basis of the aeroplane; ( distance de décollage avec tous les moteurs opérants ) all-engines-operating take-off run means the distance from the start of the take-off roll to the point midway between the lift-off point and the point at which the aeroplane reaches the height above the runway elevation specified in the certification basis of the aeroplane; ( roulement au décollage avec tous les moteurs opérants ) alternate aerodrome means an aerodrome to which a flight may proceed when landing at the intended aerodrome of destination becomes inadvisable; ( aérodrome de dégagement ) altimeter setting region means the low level airspace so specified, and delineated, in the Designated Airspace Handbook ; ( région de calage altimétrique ) appliance means any instrument, mechanism, equipment, apparatus or accessory that is (a) used, or intended to be used, in operating or controlling an aircraft in flight, (b) installed in or attached to, or intended to be installed in or attached to, the aircraft, and (c) not part of the airframe, engine or propeller of that aircraft; ( appareillage ) appropriate frequency means (a) the radio frequency specified by an ATS unit for use by the pilot-in-command of an aircraft, (b) the mandatory frequency for use at or in the vicinity of an aerodrome for which a mandatory frequency has been specified, or (c) in any case not described in paragraph (a) or (b), the frequency specified for an aerodrome or an airspace in the Canada Air Pilot or the Canada Flight Supplement ; ( fréquence appropriée ) apron means a part of an aerodrome, other than the manoeuvring area, that is intended to be used for the loading and unloading of passengers and cargo, the refuelling, servicing, maintenance and parking of aircraft and the movement of aircraft, vehicles and persons engaged in services necessary for those purposes; ( aire de trafic ) APU or auxiliary power unit means any power unit that delivers rotating shaft power or compressed air, or both, and that is not intended for direct propulsion of an aircraft; ( APU ou groupe auxiliaire de bord ) APV means approach procedure with vertical guidance; ( APV ) Arctic Control Area [Repealed, SOR/2006-77, s. 1] ASDA or accelerate-stop distance available means, in res