June 12 After the flight crew of Pan American Flight 1, the Boeing 707-321C Clipper Caribbean (registration N798PA), misunderstands the barometric pressure sent to them by air traffic control while on approach to Dum Dum Airport in Calcutta, India, and sets their instruments to the wrong pressure, giving them false altitude readings, the airliner descends too quickly, strikes a tree, and crashes 1128 meters short of the runway.