In the last scenes, the producers mad a few little mistakes with their choice of aircraft. First aircraft shown externally was an Airbus A320, which didn't come into service until 1987, (Film set in 1985). Then later, when it shows it again, it has become a Boeing 757. Incidentally, both types of aircraft are single aisled, but the movie shows a twin aisled aircraft inside with an internal staircase, i.e. Boeing 747. Also, when he gets up to play the guitar and walks from the first class cabin to the coach class cabin, the Fasten seat belt sign is ON, but the cabin crew are allowing him and almost half of the other passengers to get up and move around. Now I know that this may not seem too important, and it ain't a airplane movie, but seeing as the spend the time to find footage of aircraft, the might as well try to do it properly.