L5 - Identifiers21-12-2005 | |
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L5 - Identifiers21-12-2005 | |
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Every airfield (almost) in the world has a location identifier made of 3 or 4 letters according to 2 standards : IATA and ICAO.
The 3-letter one is the IATA standard (International Air Transport Association) : Letters chosen according to the airfield name : - Paris-Charles De Gaulle is CDG - London-Heathrow is LHR - New York JF Kennedy is JFK.
The 4-letter one is the ICAO standard (International Civil Aviation Organisation). Letters chosen according to sectors, countries and airfields (with a little difference in the USA) . 1st letter = sector in the world . 2nd letter = country into that sector . 3rd letter = sector into the country . 4th letter = specific to airfield into that sector - Paris-CDG is LFPG (sector L in the world, country France, sector P in France, G for Gaulle). - Heathrow is EGLL (sector E in the world, country Great-Britain, sector L in GB, L for London). - NY Kennedy is KJFK (sector K in the world, JFK for John Fitzgerald Kennedy).
Usually, US ICAO codes are IATA codes preceeded by K (Denver DEN-KDEN, Los Angeles LAX-KLAX, Chicago O'hare ORD-KORD etc...).
ICAO codes are used in flight plans all around the world to indicate departure, destination and alternate airfields. They must be used by IVAO's controllers also when logging (De Gaulle approach => LFPG_APP, Heathrow ground => EGLL_GND, O'Hare tower => KORD_TWR etc...). The only exception is for US centers where IATA codes are approved (Los Angeles center = LAX_CTR...).
ICAO and IATA codes for all airfields and facilities can be found into the IVAO's database.
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