Beneš & Mráz Továrna na Letadla formed at Choceň February 1935 to produce efficient low-wing monoplane light aircraft. By 1939 Be 50, 51, 52, 53, 501, 550 and 156 had flown, most being in production. Post-war M1 Sokol, M2 Skaut and M3 Bonzo appeared. See Mraz.