The Blume 502 was developed from the Blume 500 in the late 1950's by Walter Blume. The aircraft wasn't very succesful and only 2 examples were built. On May 16, 1982, the aircraft was damaged beyond repair in an emergency landing at Langenlonsheim. However, a restoration project started in 1999 and the aircraft was restored to flying condition in 2016 at Koblenz-Winningen. Early 2017 the aircraft took to the skies again, only to suffer a gear collapse upon landing. The aircraft was repaired and airworthy again at the time of the upload. Photo from W. Muntinga

The rare Blume Bl.500 series were four-seat civil utility aircraft designed by Walter Blume. First flight was on 14 March 1957. The sole Bl.503 was a higher powered version.