The Fairchild 91 (a.k.a. A-942) was a single-engine eight-passenger flying boat airliner developed in the United States in the mid-1930s. Fairchild designed the aircraft in response to a Pan American Airways request for a small flying boat to operate on their river routes along the Amazon and Yangtze. The result was a conventional high-wing cantilever monoplane with its radial engine mounted above the wing in a streamlined nacelle. Before construction of the prototype was complete, however, Pan American no longer required the aircraft to operate in China, and Fairchild optimised the design for the Brazilian tropics. After the first two aircraft were delivered, Pan American cancelled the remaining four aircraft of its order, as they no longer needed any for China, and the two aircraft were capable of handling the Amazon River. The sole A-942-B was specially built for the American Museum of Natural History and was used by naturalist Richard Archbold on his second expedition to Papua New Guinea in 1936–1937. The prototype was sold to the Spanish Republican Air Force, but the ship carrying it was captured by the Spanish Nationalists and was used by them until 1941. The A-942 bought by industrialist Garfield Wood was sold to the British American Ambulance Corps before being transferred to the RAF, who operated it in Egypt for air-sea rescue. One example was sold to the Imperial Japanese Naval Air Service for evaluation, but it was wrecked shortly after delivery, so a second example was purchased to replace it. Variants Fairchild 91 Baby Clipper Initial version built to Pan Am specifications for use on rivers, powered by a 750 hp (560 kW) Pratt & Whitney S2EG Hornet. Six built. Fairchild A-942-A Alternative designation for the Fairchild 91 Fairchild 91B Jungle Clipper Specially equipped for NYC Museum of Natural History, powered by a 760 hp (570 kW) Wright SGR-1820F-52 Cyclone. One built, NR777. Fairchild A-942-B Alternative designation for the Fairchild 91B. Fairchild XSOK-1 Proposed U.S. Navy scout; none built.[3] Fairchild LXF Two A-942Bs supplied to the Imperial Japanese Navy Air Service for evaluation.