Originally Posted by
FCeng84
MCAS will not command more than one increment of nose down trim without either having taken out the first one (via the same amount of nose up trim) or having sensed manual pilot electric pitch trim.
Okay, I'm probably not the sharpest tool in the drawer here so please bear with me. Are you saying that Boeing designed a system to address a stall certification issue relating to a pitch up tendency; that system is triggered when the airplane Angle of Attack exceeds a specified threshold; it reacts by winding in one increment of nose down stabiliser trim; having done that if left to its own devices even if the airplane Angle of Attack still exceeds the trigger threshold the system does NOTHING. That strikes me as an odd design.