@daz211
I can't understand how an aircraft can descend so dramatically over 8 minutes with out ATC asking why or the pilot contacting ATC stating why.
ATC tried to contact them when they noticed the unauthorised altitude change... they didn't respond so an emergency was declared.
The pilots were likely unconscious and/or incapacitated by this stage...
"We have obtained copies of the contact between the control tower and the pilots of the plane. These show there was no contact with the plane after it started losing altitude and
when the air traffic controllers tried to contact it there was no response."
http://www.theguardian.com/world/liv...s-live-updates