>> what was the last thing you remembered in this crash? >> i don't remember nothing. >> but this flight attendant manages to stay alive. >> i was up in my jump seat high on top of the wreckage. i couldn't get out. i had no shoes on. part of my uniform on and i was tied up. >> but what caused the plane to crash? the mystery lies in why the auto pilot suddenly failed to hold its altitude. it turns out it wasn't a mechanical failure but rather human error. according to the report, when the captain leans across to help with a light bulb, he hits the control column, shutting off the autopilot. the warning chime went off but no one seemed to notice. >> the crew not only didn't respond to it they didn't actually hear it or if they did