Blériot-SPAD S.33

The Blériot-SPAD S.33 was a small French airliner developed soon after the First World War. The aircraft was a biplane of conventional configuration whose design owed much to the Blériot company's contemporary fighter designs such as the S.20. Four passengers could be accommodated in an enclosed cabin within the monocoque fuselage, and a fifth passenger could ride in the open cockpit beside the pilot. A great success, it dominated its field throughout the 1920s, first on the CMA Paris to London route and later on continental routes served by Franco-Roumaine. One example was converted by CIDNA into a blind-flying trainer with a set of controls inside the blacked-out passenger cabin. A 190 kW Salmson CM.9 radial engine powered the 41 aircraft built.