Originally Posted by
Water pilot
When exactly does MCAS start to unwind the trim and in the worst case scenario how much uncommanded nose down trim does the pilot have to unwind if they happen to have blipped the trim switch at the wrong point in the unwind scenario?
MCAS does not “unwind” any of the nose down trim it has inputted. The expectation is that the pilots will put in the correct trim as they recover from the impending stall. We do stall recovery training regularly in the sim, and there is always a lot of retrimming involved.