kimerajamm
Joined: 28 Nov 2010
Posts: 785
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 Posted: Fri Jan 21, 2011 11:49 am Post subject: EIN111 |
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Both ICAO and IATA have their own airport and airline code systems. ICAO uses 4-letter airport codes and 3-letter airline codes. In the continental United States, the ICAO codes are usually the same as the IATA code, with a prefix of "K" — LAX is KLAX. Canada follows a similar pattern, where a prefix of "C" is usually added to an IATA code to find the ICAO code — YEG is CYEG. In the rest of the world, the codes are unrelated, as the IATA code is phonic and the ICAO code is location-based; for example, Charles de Gaulle Airport has an ICAO code of LFPG, and an IATA code of CDG.
ICAO is also responsible for issuing alphanumeric aircraft type codes that contain 2–4 characters. These codes provide the identification that is typically used in flight plans. An example of this is the Boeing 747 that would use (depending on the variant) B741, B742, B743, etc.
ICAO provides telephony designators to aircraft operators worldwide. These consist of the three-letter airline identifier and a one- or two-word designator. They are usually, but not always, similar to the aircraft operator name. For example, the identifier for Aer Lingus is EIN and the designator is Shamrock, while Japan Airlines International is JAL and Japan Air . Thus, a flight by Aer Lingus numbered 111 would be written as "EIN111" and pronounced "Shamrock One Eleven" on the radio, while a similarly numbered Japan Airlines flight would be written as "JAL111" and pronounced "Japan Air One Eleven".
ICAO maintains the standards for aircraft registration ("tail numbers"), including the alphanumeric codes that identify the country of registration.
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