Originally Posted by Bearfoil
Hi takata. No problem. In 447's case, it was not THS authority that was desired, it was the desire (seemingly unaddressed, or ignored) to defeat it, to zero it. The Elevators were fine, yes?
Of course yes.
What we are talking about is that the aircraft seems to have done, so far,
nothing wrong by itself. The THS was trimmed here and left here. The obvious reason is that there was no real attempt to pitch down with elevators. Hence THS remained where it has been ordered to be and helped to maintain this aircraft nose-up, certainly added to further NU elevators imputs by pilots...
Then, everything is pointing at the pilots not understanding the situation at all: that they were stalled, and that they will crash without pitching down the aircraft. Consequently, what happened to them? What caused them to believe something else happened and lead them to make those imputs?
Maybe the full transcript will tell us more about that. What was their strategy? We can't recognise any procedure applied from their acts alone, be it UAS, stall recovery... or whatever else.