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In coding theory, the repetition code is one of the most basic linear error-correcting codes. In order to transmit a message over a noisy channel that may corrupt the transmission in a few places, the idea of the repetition code is to just repeat the message several times. The hope is that the channel corrupts only a minority of these repetitions.
Airline codes IATA ICAO Airline Call sign Country/Region Comments PR BOI 2GO: ABAIR Philippines EVY 34 Squadron, Royal Australian Air Force: Multiple GNL 135 Airways: GENERAL United States 1A n/a Amadeus IT Group S.A. n/a Global GDS and airline hosting system (CRS/PSS) 1B n/a Sabre travel network Asia-Pacific (ex-Abacus) n/a APAC Regional ...
Airline Designator / Code Database Search Archived 2005-10-01 at the Wayback Machine (from The Airline Codes Web Site) Airline Designator / Code Database Search (from Aviation Codes Central Web Site - Regular Updates) Airline Designator / Code Listing (from FAA Web Site) European Airline Designator / Code Database Search (Eurocontrol Web Site)
Each category set can be described using either a two-digit number code or a two letter alpha code; most airlines use the numeric format, but some prefer the alpha. Messaging standards, such as the AHM 780 Aircraft Movement Message specification, specify that only the numeric codes should be used. Many airlines further subdivide the IATA codes ...
Two code sequences may be duplicates of each other without being character-for-character identical, for example by being character-for-character identical only when white space characters and comments are ignored, or by being token-for-token identical, or token-for-token identical with occasional variation. Even code sequences that are only ...
0 Segment (flight) information, including number of seats booked, status code (for example HK1 - confirmed for one passenger) and fare class; 1 Related PNR record ids. 2 PNR owner identification (airline, CRS user name and role) 3 Other airline Other Service Information (OSI) or Special Service Request (SSR) items; 4 Host airline OSI or SSR items
The Standard Schedules Information Manual (SSIM) published by the International Air Transport Association documents international airline standards and procedures for exchanging airline schedules and data on aircraft types, airports and terminals, and time zones. [1] SSIM is a file format that heavily compresses schedule information.
Airline reservation systems (ARS) are systems that allow an airline to sell their inventory (seats). It contains information on schedules and fares and contains a database of reservations (or passenger name records) and of tickets issued (if applicable).