wsherif1 & wnt
Are you guys for real? Are you, perhaps, one and the same? Are you trying the classic tactic of filling the void with "dis" or "mis" information?
All the possibilities that you mentioned were considered AND DISMISSED by the investigation. By investigation, I refer not only to the "official" report but also to the various inputs from CAAS, NTSB, Boeing, FAA and BASI. Not even Prof. Diran or the CAAS considered the inclusion in his report of such possibilities as you have raised and, believe me, those two sources would have welcomed ANYTHING to divert the focus from the captain!
There was no turbulence in that area at that time, clear or otherwise. There was no fault with the aircraft.
Please stop posting such rubbish.