10/31/2006. Remarks by Johan Visschedijk: "This micro-light was designed in 1989 by father and son Otto and Peter Funk. The casco is built in Krosno, Poland, and finished at the family company in Speyer, Germany. The B&F Technik company is often incorrectly referred to as: B&F Funk; Fk Leichtflugzeuge; Funk."