Originally Posted by
DaveReidUK
No, that's not correct.
Thanks.
I stand corrected,looks like it is indeed a ball screw.
I was misled by more than one diagram referring to the above assembly as a 'nut', some even said 'acme nut'.
That and reading the Alaska Air report which did have a nut rather than ball screw.
This is a good illustration of the pitfalls of using other than detailed drawings/schematics for analysis.
So far in this thread I have seen only one what looks to be a true schematic, the yoke trim switches with wire# but unclear labels, everything else has been a conceptual logic illustration or worse.
Same thing applies to reading the fdr plots without access to the numerical data and other factors such as sampling rates.
I suspect that the sloped lines on binary events on the plots might represent sampling uncertainty but have no way of knowing.