The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International Civil Aviation Organization and published quarterly in ICAO Document 7910: Location Indicators, are used by air traffic control and airline operations such as flight planning.

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ICAO code may refer to: ICAO airport code, a four-letter code designating each airport; ICAO airline designator, a three-letter code designating each airline; ICAO aircraft type designator, a three- or four-character alphanumeric code designating every aircraft type (and some sub-types) that may appear in flight planning

This document contains abbreviations and codes approved by the Council of ICAO for worldwide use in the international aeronautical telecommunication service and in aeronautical information documents, as appropriate, uniform abbreviated phraseology for use in pre-flight information bulletins and ATS data link communications, with the status of Pr...

Browse airports by ICAO codes starting with the letter A. Find every airport code in the world.

The International Civil Aviation Organization (ICAO / ˌaɪˈkeɪoʊ / eye-KAY-oh) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international air transport to ensure safe and orderly growth. [3] .

Find information and resources related to international civil aviation on the ICAO search page.

Learn about the three main types of airport codes, IATA, ICAO, and LID, what they are used for, and how FlightAware provides a cross-reference between them so that you can properly correlate airport data.

The "Ident" field (short for "identity") is up to 8 characters of alphanumeric text that is intended to represent the Air Traffic Control (ATC) callsign being used by the current flight (typically a 3-character ICAO airline code followed by a flight number) or the aircraft registration (tail number) for general aviation aircraft that do not fly ...

The ICAO airport code or location indicator is a four-letter alphanumeric code designating each airport around the world. These codes are defined by the International Civil Aviation Organization, and published in ICAO Document 7910: Location Indicators.