Originally Posted by safetypee
However, the hypothesis might provide a reason for the propensity for nose up control and trim movement (FDR), the early stall warning, and in the extreme (and perhaps most important), the mis trimmed interaction with normal control in alternate law might provide a reason why the trim ran fully nose up and ‘apparently’ did not move in the opposite direction, as the THS never achieved its (false) null position.
In normal conditions, to achieve +7000ft/min from FL350 on a single NU input, you effectively need a lot of speed initially, or a quite aggressive input, or ...
Be aware that the BEA did not mention that the trim moved during the initial climb from 350 to 375.
Please, would you have again a link for VH-EBA.