Blume Bl.500

Role Civil utility aircraft
National origin West Germany
Manufacturer Walter Blume
Designer Walter Blume
First flight 14 March 1957
Number built 2

The Blume Bl.500, Bl.502, and Bl.503 were a family of four-seat light aircraft designed in West Germany by Dr Walter Blume in the late 1950s.

Design and development

Derived from his Arado Ar 79, the basic design shared by all models was that of a conventional low-wing cantilever monoplane with retractable tricycle undercarriage and all-metal construction. The Bl.500 prototype was built for Blume at the Focke-Wulf plant and was powered by a Lycoming O-320 engine of 112 kW (150 hp). This led to a modified version, the Bl.502 that achieved German type certification and was offered for sale alongside the generally similar Bl.503 with a more powerful engine. However, no orders were forthcoming and Blume abandoned the project.


intended production version with Lycoming O-320
proposed production version with Lycoming O-360

Specifications (Bl.502)

Data from Jane's All The World's Aircraft 1961–62[1]

General characteristics
  • Crew: one pilot
  • Capacity: 3 passengers
  • Length: 8.15 m (26 ft 9 in)
  • Wingspan: 10.50 m (34 ft 5 in)
  • Height: 2.40 m (7 ft 10½ in)
  • Wing area: 15.0 m2 (161.5 ft2)
  • Aspect ratio: 7.35:1
  • Empty weight: 670 kg (1,478 lb)
  • Gross weight: 1,120 kg (2,469 lb)
  • Powerplant: 1 × Lycoming O-320, 112 kW (150 hp) each


  • Maximum speed: 250 km/h (156 mph)
  • Cruising speed: 220 km/h (137 mph)
  • Range: 900 km (560 miles)
  • Endurance: 4.1 hours
  • Service ceiling: 4,800 m (15,750 ft)
  • Rate of climb: 5.0 m/s (1,005 ft/min)

See also

Related development


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