FS2002/FS2004 Fournier RF4-D Motorglider.
RF4 is a aerobatic version of the RF3.
A few prototypes were built in France and 155 RF4-D (c/n 4004 to 4158) were built in Germany by Sportavia.
There are about 15 in the U.S.A.
by Kazunori Ito.