Flyingmonk wrote:
http://1000aircraftphotos.com/Helicopters/1043.htm

Is this where the UFO (kit gyro) people got their idea?

The Monk

Actually, I believe the Avian got certificated in the U.S., but they
ran out of money before they could get any made and sold. The Air &
Space (Umbaugh) and McCulloch were the only 2 that ever made it into
production. Neither made over 100 units if I recall. I have Mac # 72.