1939 Bücker Jungmann BU-131Single-Engine Piston Aircraft • Burbach, North Rhine-Westphalia, Germany

This 1939 Bücker Jungmann BU-131 (Registration D-ETHO, Serial 0060) represents an exceptionally rare example of aviation history, retaining its original Hirth HM 504 A-2 engine—a configuration found in fewer than ten surviving aircraft worldwide. With 2,655 total hours on the airframe, this Swiss Air Force veteran survived WWII unscathed before transitioning to private ownership in Switzerland (as HB-URM) and later Germany. The aircraft underwent a meticulous, authenticity-preserving overhaul in 1999, including restoration of its original instruments, fire extinguishing system, and hand-crank engine start mechanism. The engine (SN 412565)...