Originally Posted by
Aihkio
So nobody thought what would happen when the duty AoA sensor misbehaves for some reason, like getting stuck at lets say 25 deg. Multiple warnings and an activated MCAS. Maybe all primary sensors should be analysed.
I'm uncertain what to make of this, in the NTSB report:
As originally delivered, the MCAS became active during manual flight (autopilot not engaged) when the flaps were fully retracted and the airplane’s AOA value (as measured by either AOA sensor) exceeded a threshold based on Mach number.
Emphasis added.