Originally Posted by
Loose rivets
Mr Cheese
First, there is that AND word, which an earlier poster suggested, ' . . . AND, and etc., etc.'
Again, wording is so critical. But your main point: while the extent of the trim via the mini-corrections IS variable, (i.e. Mach), for the most part the repeated blips are very similar on the graphs available to us. Although the Mach modification is very small, it does get me wondering what it was doing during the fatal dive.
The ratchet effect exists - and is very apparent from the post of the FDR
permalink here to post
Regardless of wordings in spec, the pitch trim position can be seen to 'ratchet' down in 3 full steps without correction back by the PF who just blips the trim. From the scale on the left of the image the stab trim reached max nose down.