The Stinson SM-6000 Airliner was a 1930s three-engined (trimotor) ten-passenger airliner designed and built by the Stinson Aircraft Corporation. The SM-6000 was a high-wing braced monoplane with room for a pilot and a cabin for ten passengers. It was powered by three 215 hp (160 kW) Lycoming R-680 engines strut-mounted one each side above the main landing gear units and one in the nose. A number of variants were built mainly with improved interiors. In 1932 the Model U Airliner was produced which had low-set stub wings with an engine mounted at each wingtip. Variants Corman 6000 The initial prototypes produced by the Corman aircraft Co. as part of the E L Cord empire. SM-6000 Airliner 1930 initial production variant with three 215hp (160kW) Lycoming R-680 engines. 53 built. SM-6000-A Airliner 1930 variant available with different interior configurations. SM-6000-B1 Airliner 1931 all-passenger variant with better interior equipment. SM-6000-B2 Airliner As the B1 but with a mixed mail/passenger interior. Model U Airliner 1932 improved model with three 240hp (179kW) Lycoming R-680-BA engines on stub wings. 24 built. C-91 United States military designation for one SM-6000-A (s/n 42-79547) impressed into service in 1942.
