Well I suppose it depends on what you mean by "crash," you never see the plane actually crash into the ocean/island, whatever, but in the pilot you see flashbacks to things that went on the plane and when it started to shake and fall down and the tail broke off, that was in the pilot.
"If there was a Mount Rushmore for Broadway scores, "West Side Story" would be front and center. It snaps, it crackles it pops! It surges with a roar, its energy and sheer life undiminished by the years" - NYPost reviewer Elisabeth Vincentelli