MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures

[MurphyWasRight]

Originally Posted by BDAttitude

I'm not sure
1) If it was, the Interlock in FCC would not be neccessary. So the educated guess is, that it is not.
2) Operating the trim switches in AP on leads to disengagement. Another relay to priorize manual input woud be superfuous.

True, except MCAS is enabled when AP is off, perhaps another overlooked failure mode/path?