When the helicopter lands from "World Health," to when it takes are off is two different locations.
The decompression at 65,000 feet should have killed everyone.
Despite the fact that all commercial supersonic aircraft, proposed or realized, were designed with cabins having no more than 4 passenger seats per row, the interior of the aircraft depicted in this film is clearly that of a Lockheed L-1011 wide-body.
When Burgess Meredith, Doug McClure and Loren Green walk up the boarding stairs 11 minutes and 30 seconds into the film, a bug can be seen on the camera lens.
There are no mountains in the vicinity of Dakar, Senegal.