SABCA S.11 SABCA S.11 The SABCA S.11 or SABCA S.XI was a prototype Belgian airliner of the 1930s. It was a three-engined high-winged monoplane intended for service in the Belgian Congo, but only a single example was built. In 1926, the Belgian government issued a specification for an all-metal trimotor airliner to replace the wooden Handley Page W.8 biplanes used by Belgian airline SABENA in the Belgian Congo. To meet this requirement, Sociétés Anonyme Belge de Constructions Aéronautiques (SABCA) offered a high-winged monoplane, the S.XI, designed by Henri Jullien, its chief engineer, which was intended to fly in 1928. The S.XI had
Sabena that it had to buy jumbo jets for its prestige services, notably New York JFK and as of the mid-seventies, Chicago O'Hare. Sabena purchased only two first generation jumbo jets and it continued to fly the 707 into the late 1970s. In 1973, the Boeing 727s on the European network were replaced by Boeing 737-200s. The Douglas DC-10-30 entered service in 1974. In total, Sabena purchased five of these convertible (Passengers and/or freight) combi aircraft wide-body jets. In 1984 Airbus A310s were introduced on routes that had high passenger density. This aircraft type also introduced a modernisation of the 1973