Originally Posted by
rog747
But as I have read on here one has to first switch off the 2 Stab trim cut off's first otherwise the MACS system will override and continue to keep trimming the a/c nose down despite whatever the pilots do either with the Trim button or manually when in manual flight - and THAT task is what it seems Boeing forgot to tell anyone in the MAX training differences - Am I correct?
And, at the risk of simply going round in circles here, there's the oddity of the final 2 lines in the "reminder" Runaway Stab memory item list that Boeing later pointed to:
Runaway Stabilizer
1 CONTROL COLUMN - HOLD FIRMLY
2 AUTOPILOT (if engaged) - DISENGAGE
Do not re-engage the autopilot. Control airplane pitch attitude manually with control column and main electric trim as needed
If the Runaway Continues
3 STAB TRIM CUTOUT SWITCHES (both) - CUTOUT
If the Runaway Continues
4 STABILIZER TRIM WHEEL - GRASP and HOLD