Originally Posted by
FlyF35
NASA report is also similar to prior flight experience (which landed safely) of the 1st crashed 737 Max last year per preliminary report:
The PIC moved the STAB TRIM switches to CUT OUT and the SIC continued the
flight with manual trim without auto-pilot until the end of the flight.
The remainder of the flight was uneventful and the aircraft landed Jakarta about 1556 UTC.
This is exactly what has been puzzling me. The two pilots on the previous flight were familiar with the CUT OUT switches and the two on the accident flight were not? The earlier two even proved the problem by activating the switches again which initiated the AND condition again before shutting them off for the rest of the flight. If you look at the DFDR graph on the initial report, the accident crew looked to be fighting the automation to the end.