Originally Posted by
Cows getting bigger
Err, the reason for the inclusion of MCAS is to address a certification issue regarding static stability. The issue is wholly to do with reduced static stability which appears to be erring towards static neutrality. In other words, in certification terms, without MCAS the aircraft is not stable enough.
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?