Morane-Saulnier MoS-121

The Morane-Saulnier MoS-121, also known as the MS.121, was a French single-seat parasol-wing fighter prototype and the company's first fighter design after the First World War. It was built in response to the Jockey programme for light fighters launched by the French government and air force in 1926, which stressed climb rate, endurance and a ceiling of 8,000 metres with moderate armament. The mixed wood and duralumin aircraft carried two Vickers machine guns and a 465 horsepower Hispano-Suiza 12Jb engine, and the pilot could lower the ailerons in flight to increase lift and permit lower landing speeds. The sole prototype flew in mid-1927 and climbed well in official testing, but no production followed, because the company turned to the more capable MS.221.