Freak accident. I still don't know exactly what happened, but I'm 80 percent certain that something other than my thumb caused the plane to tip over inverted. Convinced that it was a servo failure, I then tried to crash the plane as best I could. Amazingly, and somewhat disturbingly, I managed to nearly hit one of two people who were in the rather large area in which I was flying. I only realized this after running over to the crash site area. The bicyclist was largely cool about the whole thing. The result of the crash was a blunt nose and a broken motor mount. These little foam gliders are amazingly stout.