The plane that they leave on at the end of the film was originally a C-82 Boom aircraft. The
stunt of taking off was too dangerous, and thus pilot Paul Mantz was asked to merely come in
low, run his landing gear along the ground, and then take off again, simulating a take-off. On
the second take, Mantz was killed and the plane destroyed. As all main footage had already
been shot, a North American O-47A observation plane from the Air Museum was substituted
for the remaining closeups.