Originally Posted by
Chesty Morgan
I don't think it's necessarily a bad thing but in this case MCAS is a certification requirement. Is it allowed to be deactivated? I don't know.
As I’m understanding things, yes ... it can be deactivated by two guarded switches on the pedestal, provided the crew know about it and have time and hands free to use them whilst both also hauling on the yoke and fighting trim with the yoke switches or the trim wheel which get over-ruled every 5 seconds by Stab Trim through MCAS and wondering what’s going on. Or by dropping a notch of flap. Or autopilot on (or was that off?). Simple, isn’t it!
Am I right?
Anyway, back to the professionals who fly these things. But the various inputs here have been fascinatingly instructive.