Hi FDMII,
Whilst I agree with most of what you have said, I would also include the accident of D-AXLA, XL Airways
https://www.bea.aero/docspa/2008/d-l...a081127.en.pdf
Please see page 86 2.1.5 Loss of Control.
The common thread with these accidents is the crew were completely confused by the response of the aircraft to their control inputs when the aircraft is in ALT or Direct Law.
"The loss of control was thus caused by a thrust increase performed with a full pitch-up horizontal stabilizer position. This position and the engine thrust made pitch down control impossible. It should be noted that the PF made no inputs on the horizontal stabilizer nor reduced the thrust and that the PNF did not intervene. This seems to indicate that none of them were aware that the automatic trim system, which relieves the pilot of any actions to trim the aeroplane, was no longer available. In the absence of preparation and anticipation of the phenomenon, the habit of having the automatic trim system available made it difficult to return to flying with manual trimming of
the aeroplane."
For reasons we may never know and understand, the aircraft was severely mishandled, just as QZ8501 was.
So were they all idiots or is the man machine interface not perfect?