Derfred, Bloggs,
See post
Ethiopian Prelim Report and previous via links; particularly
https://www.pprune.org/10439906-post.html
Unsurvivable - at some point in time; probability after selecting stab trim off !
And that using yoke elect trim before that would loose the battle with MCAS 10 to 5 against; or that using manual wheel trim after that point, the single crew member might be unable to restore trim to an acceptable stick force to enable the other pilot to control altitude and speed whilst stick forces increase and trim is even less effective.
Startle - nothing worse than following procedures and finding that they don’t work !
The line which the industry has crossed, as in this accident, is the assumption that pilots will always be able to manage … ,
………………………………………………………but only with hindsight