The Flight of the Phoenix

The Flight of the Phoenix is a movie starring James Stewart, Richard Attenborough, and Peter Finch. After a plane crash in the Sahara, one of the survivors says he's an airplane designer and they can make a flyable plane from the...
A cargo aircraft crashes in a sandstorm in the Sahara with less than a dozen men on board. One of the passengers is an airplane designer who comes up with the idea of ripping off the undamaged wing and using it as the basis for a replacement aircraft they need to build before their food and water run out.