Originally Posted by
Water pilot
So that is a selonoid on the column cutout override switch, right? What happens if it sticks ON, perhaps because someone installed the wrong one? (I have seen this.). Since MCAS is never engaged normally such a fault could lie in wait a long time. What woukd be the consequence, there is not much detail in that schematic.
The system (stabilizer trim control column switching module) must be checked every 6000 FH according MPD.