Fr: AIP Canada (OACI)
AIRAC Abbreviation for: Aeronautical Information Regulation and Control Fr: AIRAC
AIRAC Canada  A type of notice issued weekly by the aeronautical information service (AIS) to provide producers  of aeronautical information with advance notification concerning changes within the Canadian Domestic Airspace (CDA) and any other airspace in respect of which Canada has the responsibility for the provision of ATC service.  Fr: AIRAC Canada
airborne collision avoidance system An aircraft system based on secondary surveillance radar (SSR) transponder signals which operates independently of ground-based equipment to provide advice to the pilot on potential conflicting aircraft that are equipped with SSR transponders.
.  
abbreviation: ACAS

.  
see also: traffic alert and collision avoidance system (TCAS)

Fr: système anticollision embarqué
airborne warning and control system An airborne radar unit used as an extension of a military radar unit during operations, planned exercises and daily training missions.
.  abbreviation: AWACS
Fr: système aéroporté d’alerte et de contr.le
aircraft
(1) Any machine, including a rocket, capable of deriving support in the atmosphere from reactions of the air.
.  abbreviations: A/C and ACFT
Fr: aéronef
(2) DND: Flying machines and guided missiles that derive their lift in flight chiefly from aerodynamic forces, and flying devices that are supported chiefly by their buoyancy in air, including any aeroplane, balloon, kite balloon, airship, glider or kite.
.  abbreviation: ACFT
Fr: aéronef
(3) ICAO: Any machine that can derive support in the atmosphere from the reactions of the air other than the reactions of the air against the earth’s surface.
.  abbreviation: ACFT
Fr: aéronef
aircraft accident An occurrence associated with the operation of an aircraft that takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked, in which
(a)
a person is fatally or seriously injured as a result of

(i)  
being in the aircraft, or

(ii)
direct contact with any part of the aircraft, including parts that have become detached from the aircraft, or

(iii) direct exposure to jet blast, except when the injuries are the result of natural causes, are  self-inflicted or are inflicted by other persons, or when the injuries are to stowaways hiding outside the areas normally available to the passengers and crew; or

(b)
the aircraft sustains damage or structural failure that

(i)  
adversely affects the structural strength, performance or flight characteristics of the aircraft, and