This is basically a disaster movie prototype, from before there were such things. It wasn't the first film made about a flight in peril, but it was one of the first to feature a jet aircraft. This film is chock-a-block with fine acting talent and the claustrophic confines of the aircraft make for a good 'plot pressure cooker' that eventually brings things to a head.
Actually the confines of the aircraft are not anywhere near as small as they ought to be; the aircraft cabin set is eerily quiet, and incredibly spacious, having eight foot plus ceilings, wide seats and a huge gangway. There is a downstairs lounge too, with a second row of windows (unseen in any external shots), a bar and a luggage hold that you can wander around in. Jet aircraft were certainly not like that at the time and in fact never really have been. The camera work has just a hint of sway to it; enough to suggest the aircraft is actually flying, but without making you feel seasick watching it. The aircraft used in the film vary; in long shots prior to and during take-off a medium-haul Aeroflot Tu104A (CCCP-42390) is used, however they are seen boarding G-AOYM (actually a BEA Vickers Viscount, with no jet engine exhaust in the trailing edge of the wing root of course) and announce themselves using a different call sign (G-AJOR) to the control tower. A Tu104-esque model is used too, which is also marked G-AJOR. Near the end of the film a completely different aircraft, a turboprop of some kind, is seen in twilight.
The film was released in 1959; the only passenger jet aircraft flying for most of the previous three years had been the Tu104. Both the Boeing 707 and the DH Comet IV had been flying transatlantic since October 1958, but portraying either type in a disaster movie would have been a political hot potato; effectively the US and UK aircraft industries were busy duking it out for the long haul jet aircraft market. Choosing the Tu104 to represent a fictional type flying the equally fictional 'Atlantic Queen' service was a neat way out of any controversy that might so be caused.
It is a pretty good film, this, all told; an interesting period piece, a proto-disaster movie, a hothouse of acting talent.
