Sabena Flight Academy to the Saab Safir 91B, replaced in 1958 by the Cessna 310B and in 1981 by the Embraer Xingu. In 1991, the government gifted the "École d’aviation civile" to Sabena. It was first renamed Belgian Aviation School and then Sabena Air Training Center, and the school moved into a new building at Brussels National Airport. It was decided to carry out practical flight training in Phoenix in the USA because the weather in Arizona allows flights 365 days per year in a high and complex air traffic environment. Despite the bankruptcy of Sabena in 2001, the flying school continued in
Airline teletype system although it is now owned by Rockwell Collins. In 1949, the Société Internationale de Télécommunication Aeronautique (SITA) was formed as a cooperative by 11 airlines: Air France, KLM, Sabena, Swissair, TWA, British European Airways, British Overseas Airways Corporation, British South American Airways, Swedish AB Aerotransport, Danish Det Danske Luftfartselskab A/S, and Norwegian Det Norske Luftfartselskap. Their aim was to enable airlines to be able to use the existing communications facilities in the most efficient manner. Morse code was the general means of relaying information between air communications stations prior to World War II. Generally, it was only necessary to relay