Originally Posted by
wheelsright
"as soon as MCAS starts trimming you can stop it with a reverse blip."
How do you know that?
I can't recall exactly but I have seen quite authoritative looking documents on t'interwebby that state it.
You can look for yourself at the LionAir preliminary report and notice the frequent truncated AND automatic trim pulses coincident with manual ANU trim pulses beginning. This was during the period when the captain was maintaining good trim on average for several minutes.
http://www.flightradar24.com/blog/wp...ary-Report.pdf
Edited to add:-
https://theaircurrent.com/aviation-s...ion-air-crash/
Has an image of what appears to be a Boeing document that includes the text "The nose down stabilizer trim movement can be stopped and reversed by the use of the electric stabilizer trim switches ... but may restart ...". See the Orange marked section below.
