A Mystery By DR:
The right foot on the Scamp
5r fell off and the pin is still there. Apparently the safety wire on the pin, on the foot, came off and the pin slipped through the foot part way and the foot fell off however the pin is still there, through the hole on the other side.
It would appear that there was no bracket on the outside of the foot for the pin to go through and when it vibrated away from the hole on the other side, the foot fell off or, being that I never stopped, someone ran at 70 miles per hour and removed the pin, let the foot drop and then reinserted the pin.