ICAO Abbreviations and Codes
ICAO Abbreviations and Codes
ICAO Abbreviations and Codes
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ABBREVIATIONS<br />
DECODE<br />
A<br />
A<br />
AAA<br />
A/A<br />
AAD<br />
AAIM<br />
AAL<br />
ABI<br />
ABM<br />
ABN<br />
ABT<br />
ABV<br />
AC<br />
ACARS†<br />
ACAS†<br />
ACC‡<br />
ACCID<br />
ACFT<br />
ACK<br />
ACL<br />
ACN<br />
ACP<br />
ACPT<br />
ACT<br />
AD<br />
ADA<br />
ADC<br />
ADDN<br />
ADF‡<br />
ADIZ†<br />
ADJ<br />
ADO<br />
Amber<br />
(or AAB, AAC . . . etc., in sequence)<br />
Amended meteorological message<br />
(message type designator)<br />
Air-to-air<br />
Assigned altitude deviation<br />
Aircraft autonomous integrity<br />
monitoring<br />
Above aerodrome level<br />
Advance boundary information<br />
Abeam<br />
Aerodrome beacon<br />
About<br />
Above<br />
Altocumulus<br />
(to be pronounced “AY-CARS”)<br />
Aircraft communication<br />
addressing <strong>and</strong> reporting system<br />
Airborne collision avoidance system<br />
Area control centre or area control<br />
Notification of an aircraft accident<br />
Aircraft<br />
Acknowledge<br />
Altimeter check location<br />
Aircraft classification number<br />
Acceptance (message type designator)<br />
Accept or accepted<br />
Active or activated or activity<br />
Aerodrome<br />
Advisory area<br />
Aerodrome chart<br />
Addition or additional<br />
Automatic direction-finding<br />
equipment<br />
(to be pronounced “AY-DIZ”) Air<br />
defence identification zone<br />
Adjacent<br />
Aerodrome office (specify service)<br />
ADR<br />
ADS*<br />
ADS-B‡<br />
ADS-C‡<br />
ADSU<br />
ADVS<br />
ADZ<br />
AES<br />
AFIL<br />
AFIS<br />
AFM<br />
AFS<br />
AFT . . .<br />
AFTN‡<br />
A/G<br />
AGA<br />
AGL<br />
AGN<br />
AIC<br />
AIDC<br />
AIP<br />
AIRAC<br />
AIREP†<br />
AIRMET†<br />
AIS<br />
ALA<br />
Advisory route<br />
The address (when this abbreviation is<br />
used to request a repetition, the<br />
question mark (IMI) precedes the<br />
abbreviation, e.g. IMI ADS) (to be<br />
used in AFS as a procedure signal)<br />
Automatic dependent surveillance<br />
— broadcast<br />
Automatic dependent surveillance<br />
— contract<br />
Automatic dependent surveillance unit<br />
Advisory service<br />
Advise<br />
Aircraft earth station<br />
Flight plan filed in the air<br />
Aerodrome flight information service<br />
Yes or affirm or affirmative or that is<br />
correct<br />
Aeronautical fixed service<br />
After . . . (time or place)<br />
Aeronautical fixed telecommunication<br />
network<br />
Air-to-ground<br />
Aerodromes, air routes <strong>and</strong> ground<br />
aids<br />
Above ground level<br />
Again<br />
Aeronautical information circular<br />
Air traffic services interfacility data<br />
communications<br />
Aeronautical information publication<br />
Aeronautical information regulation<br />
<strong>and</strong> control<br />
Air-report<br />
Information concerning en-route<br />
weather phenomena which may<br />
affect the safety of low-level<br />
aircraft operations<br />
Aeronautical information services<br />
Alighting area<br />
___________________<br />
† When radiotelephony is used, the abbreviations <strong>and</strong> terms are transmitted as spoken words.<br />
‡ When radiotelephony is used, the abbreviations <strong>and</strong> terms are transmitted using the individual letters in non-phonetic form.<br />
* Signal is also available for use in communicating with stations of the maritime mobile service.<br />
# Signal for use in the teletypewriter service only.<br />
1-1 18/11/10
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