Originally Posted by
FGD135
Not difficult to rotate the trim wheels under certain circumstances, but impossible.
IMPOSSIBLE.
Picture the stab, angled leading-edge up (trimmed for nose down) - then picture the elevator, attached to the rear of the stab, deflected up (to achieve nose up pitch).
The down force at the rear of the stab (due to the elevator deflection) makes stab movement IMPOSSIBLE above a certain speed.
IMPOSSIBLE.
The more this subject is examined the more convinced I am that it will be IMPOSSIBLE for the MAX to retain its certification in current form. A quick fix is not going to cut it. No regulator will put their head on a chopping block over it.