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.
The report from Paris cited a senior military official involved with the investigation who described audio recovered from the black box recorder.
http://www.usatoday.com/story/news/world/2015/03/25/french-alps-crash/70416962/
