The Concorde: Airport '79 (1979) http://www.cinemaroll.com/Cinemarolling/The-Con... Joe Patroni, now promoted to Airline Captain, pilots a plane which a corrupt company, Harrison Industries, wants to crash because one of the passengers on board, Maggie, holds documents with her that prove Harrison Industries is secretly making nuclear weapons. The company's CEO, Kevin Harrison, is also on this flight to make sure all goes as planned, but it doesn't, so he improvises by de-pressurizing the aircraft at altitude, therefore crashing the plane right into the Alps.
Airport '77 (1977) http://www.cinemaroll.com/Cinemarolling/Airport... A 747 airliner is hijacked for some valuable cargo on board and ends up crashing in the Bermuda Triangle. Now the crew and passengers must escape before the plane is completely submerged with water.