Evidence collected from the cockpit voice recorder of the crashed German airliner indicates one pilot left the cockpit before the plane began its descent and was unable to get back in, The New York Times reported.
This happened years ago to a friend travelling on an African airline. The entire flight crew left the cockpit and the door closed, locking them all outside. On that occasion they broke back in using the fire axe, I dunno if planes still come equipped with such a thing.
Birdwatcher
