The Jungmann was the first product of Bücker Flugzeugbau and flew for the first time in April 1934 as a compact trainer build by classic double decker formula with an open two-persons cockpit in a with fabric covered casco of steel pipes.

The type came in production as the Bü 131A with the same 60 kW Hirth HM 60R air-cooled line-engine that had powered the prototype. While the improved Bü 131B was fitted with the Hirth HM 504A-2 (78 kW)

Bücker exported the 131 Jungmann on a large scale and in Japan more than 1250 were produced as the Watanabe Ki-86 and K9W.

To be able to foresee in the demand for the Bü 131, Bücker opened a second factory where the design-team of the company developed the almost identical single-seater Jungmeister for further flight-training.

Developing Nation: Germany First Flight(s): April 1934 Crew: 2 Wing Span: 7,40 m. Wing: 13,50 m. Length: 6,62 m. Weight empty: 390 Kg. Flight weight: 680 Kg. Engine (s): 1x Hirth HM 504A-2 line-engine air-cooled (78kW) Max. Speed: 183 Kph. at sea level Max. Height: 3000 m. Max. Range: 650 Km. Weapons: none