CNN Anderson Cooper 360 March 31, 2015 00:40:00
Published by the german tabloid "bild." 10:29, air traffic control sees the plane mysteriously descending and calls it. there is no response. the recording revealed an alarm going off in the cockpit warning about the sink rate of the aircraft. moments later the captain yells, for god's sake open the door! the first banging is heard. and people are screaming. 10:35. the plane is now down to 23,000 feet. another alarm goes off. terrain, pull up. the banging continues. the captain shouts, open the damn door! 10:38. the plane is at 13,100 feet. still traveling close to 450 miles an hour and so low...
Source: archive.org