One thing playing on my mind, Has Tech Log 26918 appeared yet or is it still missing? Had any Snags been reported or work carried out whilst the Aircraft was on the ground for 5 or so hours at KUF?
Going by the theories on her regarding the HS, VS & Trim Jack I can see a couple of EASA AD's published which are in the vicinity of the suspect area
1.
EASA AD - 2015-0080 - Flight Controls – Trimmable Horizontal Stabilizer Actuator – Identification / Replacement
2.
EASA AD - 2014-0217R1 - Auto Flight / Instruments – Stop Rudder Input Warning – Installation / Activation
Both the above possibly resulting in loss of control of the aeroplane.
No biggie I know but looking at Metrojet's 145 approval they only hold Line approval and not Base
Just one last thing, what about Rear cargo door I have not seen any pictures of this. Could this have somehow become detached?