Re pitot pressures and pitot covers etc., pitot pressures for the elevator feel computer are sourced from individual pitot tubes located on either side of the vertical fin, (and not the pitots supplying data to the ADRs).
The static ports for inputs to the elevator feel computer are located on the lower left rear of the fuselage, (below/fwd of the horizontal stab). This is for the -400 series and may differ for the Max.
This may distinquish a unique "UAS" problem, (single failure, referenced generally in the thread), from any possible combined UAS / STS / Elevator feel problem, (ref D.Bru comments). The SSDFR and CVR information become critical to understanding.
Last edited by PJ2; 5th Nov 2018 at 06:41.