Mitsubishi MC-1

The Mitsubishi MC-1 was a single-engined biplane airliner of the 1920s, designed and built by the Mitsubishi Aircraft Company for a 1927 competition run by the Japanese Department of Communications to produce an indigenous passenger aircraft. It combined the wings of the B1M torpedo bomber with a new fuselage, and was a large three-bay biplane with a 287 kilowatt Armstrong Siddeley Jaguar radial engine, a pilot in an open cockpit and an enclosed cabin for four passengers, though some sources say eight. It was finished in April 1928 and lost out to Fokker monoplanes. The prototype still flew an experimental Tokyo to Osaka air service from June 1928 and later sightseeing flights as a seaplane until 1938.