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
National Airline History Museum Martin 4-0-4s built. TWA operated 40 in their fleet along the U. S. east coast, while strong competitor Eastern Airlines operated the largest 4-0-4 fleet, flying 60 aircraft along that airline's eastern seaboard route, including in and around Florida. The museum's Martin 4-0-4 has not flown in years. As part of the National Airline History Museum’s reorganization plan, which began in 2011, a maintenance inspection of the Martin 4-0-4 was completed in August 2011 to determine the feasibility of returning the aircraft to flying status. Rumors of extensive corrosion and insurmountable mechanical problems were found to be untrue, and a