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IATA airline designators, sometimes called IATA reservation codes, are two-character codes assigned by the International Air Transport Association (IATA) to the world's airlines in accordance with the provisions of Resolution 762. They form the first two characters of the flight number. Designators are used to identify an airline for all commercial purposes, including reservations, timetables, tickets, tariffs, air waybills and in airline interline telecommunications. There are three types of designator: unique, numeric/alpha and controlled duplicate. Since 1987 the International Civil Aviation Organization (ICAO) has been issuing three-letter codes, which are due to be adopted by IATA. IATA mantains two policies to deal with the limited number of available codes: after an airline is delisted the code becomes available for reuse after six months; and IATA issues "controlled duplicates". Controlled duplicates are issued to regional airlines whose destinations are not likely to overlap, such that some codes are shared by two different airlines. The controlled duplicate is denoted in IATA literature and here with an asterisk ( List of designators Airlines listed by designator, with nationality in parentheses. 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also | |||||||
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