ACAS Abbreviation for: airborne collision avoidance system Fr: ACAS
ACC Abbreviation for: area control centre Fr: ACC
ACFT Abbreviation for: aircraft Fr: ACFT
ACID Abbreviation for: aircraft identification Fr: ACID
“Acknowledge” An expression used in radiocommunication meaning “Let me know that you have received and understood this message.” Fr: . Accusez réception .
acknowledgement
Notification that a given communication has been correctly received and understood.
Fr: accusé de réception
ACN ICAO: Abbreviation for: aircraft classification number Fr: ACN
acrobatic flight ICAO and U.S.: Expression for: aerobatic manoeuvre
active runway Other expression for: runway in use
acts of unlawful interference
Acts or attempted acts such as to jeopardize the safety of civil aviation and air transport, i.e.:
(a)
unlawful seizure of aircraft in flight;
(b)
unlawful seizure of aircraft on the ground;
(c)
hostage-taking on board aircraft or on aerodromes;
(d)
forcible intrusion on board an aircraft, at an airport or on the premises of an aeronautical facility;
(e)
introduction on board an aircraft or at an airport of a weapon or hazardous device or material intended for criminal purposes;
(f)
communication of false information such as to jeopardize the safety of an aircraft in flight or on the ground, of passengers, crew, ground personnel or the general public, at an airport or on the premises of a civil aviation facility.
. also called: hijack
Fr: actes d’intervention illicite
A/D Abbreviation for: aerodrome Fr: A/D
AD Abbreviation for: aerodrome Fr: AD
ADCUS U.S.: Abbreviation for: “Advise customs”
ADCUS service U.S.: Abbreviation for: customs notification service
ADF
(1) Abbreviation for: automatic direction finder or automatic direction-finding equipment
Fr: ADF
(2) Abbreviation for: adjusted delay factor
Fr: ADF
ADIZ Abbreviation for: air defence identification zone Fr: ADIZ
adjusted delay factor The required delay to be applied to an aircraft’s proposed departure time when flow control restriction procedures are in effect.
. abbreviation: ADF
Fr: facteur ajusté de retard
ADS Abbreviation for: automatic dependent surveillance Fr: ADS
ADT Abbreviation for: assigned departure time Fr: ADT
advanced ultralight aeroplane
An ultralight aeroplane that has a type design that is in compliance with the relevant standards.
. see also: ultralight aeroplane
Fr: avion ultra-léger de type évolué
“Advise customs” U.S.: An expression used by pilots to request that ATS advise U.S. Customs on their behalf of the estimated time of landing at destination. Note: In Canada, this expression is used only by pilots travelling to the U.S.
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