MCAS doesn't behave like a runaway stabilizer. MCAS adjusts the trim periodically and will back off if you apply opposite trim.
The steps to deal with runaway trim are[1]:
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.
3 If the runaway stops:
■ ■ ■ ■
1: http://www.737ng.co.uk/737-800%20Quick%20Reference%20Handboo...
4. If the runaway continues: STAB TRIM CUTOUT switches (both) . . . . . . . . . CUTOUT
If the runaway continues: Stabilizer trim wheel . . . . . . . . . . Grasp and hold
I don't see why someone would stop at step 3, given that the MCAS pause cycle is only 5 seconds long.
Because that's where many pilots would stop. The "runaway" stops when the pilot inputs opposite trim.
MCAS doesn't behave like a runaway stabilizer. MCAS adjusts the trim periodically and will back off if you apply opposite trim.
The steps to deal with runaway trim are[1]:
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.
3 If the runaway stops:
So someone trying to make sense of MCAS would logically stop at step 3 and not actually disable MCAS.1: http://www.737ng.co.uk/737-800%20Quick%20Reference%20Handboo...