Sabena followed on 1 May 1929 via Antwerp, Düsseldorf, and Essen. When Sabena was created, the airline was partly funded by Belgians in the Belgian Congo colony who lost their air service, an experimental passenger and cargo company (LARA) between Léopoldville, Lisala, and Stanleyville a year earlier and who expected the new Belgian national airline to fill this gap. On 12 February 1925, Sabena pioneered a long haul across Africa to Leopoldville, capital of the Belgian Congo. Throughout its history, Sabena had a long tradition of service to African destinations and for a long time these were the only profitable routes
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