Originally Posted by
deltafox44
It needs a new aircraft. Or reduce weight and balance limits of the 737 to have enough control authority at any point of the flight enveloppe
MCAS is able to do its job with 2.5 degrees of stabilizer up to Mach 0.4 and less than 1/3rd of that at cruise. That MCAS can insert more stabilizer motion that this design limit is beyond its design requirements. There is not a control power deficiency as there is plenty of elevator to counter the design levels of stabilizer that MCAS needs.