[Halcyon]

You would hope the fast rate of falling would have caused the passsengers to black out.

Obsviusly it is very hard to make any conclusions so soon. Will be interesting to see if they find any wreckage away from the main site which could possibly indicate structural damage / tail damage.

Obviously pilot suicide is a possibility but why wait so long in the flight?

And looking at logs it does seems that there was a brief moment where the aircraft regained altitude so they were possibly trying to sort things out.