Originally Posted by
groundbum
so why not have a separate cutout switch just for MCAS, keep the other two to cutout electric trim. But the new MCAS cutout switch would leave electric trim available.
I'm also unclear since the certification requirement was for force feedback on the stick during certain stall regimes why Boeing didn't just use some kind of motor/pneumatic on the stick to give this force, rather than connecting MCAS to control surfaces! Seems overkill, no pun intended. I mean the stick shaker no doubt uses a motor to shake the stick, it doesn't shake the ailerons in order to make the stick shake!
G
There would be no force on the stick without the feel and centering system. It has been said that, for some reason, this system is not able to provide the extra force needed near stall. Of course it could have been modified to do so, but that mean a lot of money, whereas MCAS is just a software modification
