During one of Chris' flights with the instructor, the instructor's glasses appear/disappear between shots.
At one point, when the glider releases, it turns left and the tow plane turns right. In North America, however, the glider ALWAYS turns right and the tow plane goes left (although this could be a mirrored image.)
Chris' instructor tries to give him advice during his potential Diamond flight. When a pilot is attempting any sort of badge flight, the ground crew is not allowed to give them any advice/hints/etc.
Throughout the presentation, there are a number of mirrored images, which are identifiable by numbers on the airplanes/gliders being reversed.
When Chris lands the glider on the golf course, in the distance shots the pilot clearly isn't Chris.