Originally Posted by
edmundronald
Why not have an emergency override switch that allows pilots to command the stabiliser RAPIDLY to a precise target position? Or one of a few conveniently spaced positions within its total excursion?
That way if MCAS does something unwanted, or other issues arrive that make fast manual retriming desirable the pilots just select the desired target position and get back to sanity ...
Edmund
No, not a good idea at all. First of all the pilots HAVE a switch that overrides MCAS while it is trimming: the electric trim switch on the control wheel. Second, the last thing you want is an instant reset of a fully nose-down trimmed THS while the pilots are pulling full up, it is pretty much guaranteed to pull the wings off. There is a reason the trim speed isn't faster.