Originally Posted by
SteinarN
It would have been really interesting to know what the stability margin actually is at high AoA. If the full 2,5 deg stabilizer travel really is needed to give the Max a sufficient positive stability/stick force gradient when going from about 10 deg AoA up to about 14 deg AoA, it would seem that a large part of the positive stability in this region is lost without MCAS?
also, I would be surprised if with, when MCAS has been activated for what it is intended to do (increase stability), having moved the stabilizer 2.5° from its previous position, it lets the plane return by itself at the previous trimmed speed as it should by this rule :
The airspeed must return to within 10 percent of the original trim speed for the climb, approach, and landing conditions specified in § 25.175 (a), (c), and (d), and must return to within 7.5 percent of the original trim speed for the cruising condition specified in § 25.175(b), when the control force is slowly released from any speed