Debuted at Hannover 1987, the Ruschmeyer MF.85 prototype, D-EEHE, was built over three years by Horst Ruschmeyer’s fix based operation. The MF.85 is a composite four seat aircraft, planned to be offered with 180, 212, or 245 hp. Price was planned to be DM245,000 to DM325,000 (excluding avionics). The type could be specified as fixed undercarriage or retractable.
The prototype (V001 D-EEHE) flew with a 212 hp Porche PFM.3200N with a three bladed MTV.9 constant speed propeller engine on 8 August 1988, piloted by Horst Ruschmeyer.
V002 (D-EERO) flew on 23 September 1990, and V003 (D-EERH) on 12 February 1992.
The unavailability of the Porche PFM powerplants led to the development of the Textron Lycoming powered R 90.