01/31/2011. Remarks by Johan Visschedijk: "The single-seat RF-7 was derived from the RF-4D motor glider and mainly differed in having a much shorter wing, larger vertical tail, a more powerful 68 hp Sportavia-Limbach SL1700 piston engine and a redesigned landing gear.

The RF-7 was mainly intended as an aerobatic light sport aircraft and, although developed for Sportavia-Pützer & Co. GmbH AG in Germany, the prototype was built in France by the designer René Fournier and this aircraft first flew on 5 March 1970.

Further development was halted although Sportavia built a second very similar aircraft. An amateur-built example was also first flown in France on May 7, 1983, this was built by A. Boinewith and ahd an 80 hp Limbach L2000E engine."