The Aircraft on which this film is set is a Tupolev Tu-104. This was a Soviet (Russian) made passenger jet, codenamed 'Camel' by NATO. In the film, the airline the passengers fly on is a British one running a London-New York service. However it does seem highly unusual that they are operating this service with a Soviet-made Jet aircraft, especially since this film was made during the height of the Cold War. In the film when the Jet takes off, its Aeroflot markings and Soviet flag are easily visible. The Tu-104 was only operated by the USSR and other Communist-affiliated countries, and the aircraft would not have been able to run a full passenger London-New York service without a stop over (as occurs in the movie). Why the producers chose this Aircraft and not the British-made Comet 4 or Boeing 707 (both aircraft had the range to cross the Atlantic) is a mystery.