The Beneš-Mráz Be-50 Beta-Minor was a light airplane manufactured in Czechoslovakia shortly before World War II. First flown in 1935 it was a low-wing cantilever monoplane of wooden construction with tandem open cockpits and fixed tailwheel undercarriage. The aircraft proved popular with Czechoslovakia's aeroclubs and was successful in international competitions. In 1937 the designers created a modernised version the Be-51 which featured a reduced wingspan and fully enclosed cockpits.
Made by Beneš-Mráz.