Sabena served by the airline. Sabena used landplanes for its Congo operations and a program of aerodrome construction was initiated in the Congo. This was finished in 1926 and Sabena immediately began flights within the Belgian colony, the main route being Boma-Léopoldville-Élisabethville, a 2,288 km (1,422 mi) route over dense jungle. First, flights were operated with De Havilland DH.50s, although these were quickly replaced by the larger Handley Page W.8f which had three engines and offered ten seats. By 1931 Sabena's fleet, including the aircraft used on the Congo network, totalled 43 aircraft. Its mainstay type was the Fokker F.VIIB with
Air Zaïre other funds earned by Sabena in the country. Foreign ownership of the airline was eliminated at the same time, with the Congolese government holding a seventy percent share, the "Institut National Securite Sociale" holding eight percent, and local Congolese concerns holding the remainder. At the time, the fleet comprised two Douglas DC-6s, eight DC-4s, eleven DC-3s, two Curtiss C-46s, three Beech 18s, five Beech Barons, one Piper PA-23 Aztec and one Cessna 310. In 1967 the airline ordered two Sud Aviation Caravelles for delivery in October 1967 and the summer of 1968, and on 12 May 1967 a BAC One