Originally Posted by
Sailvi767
The trim system in the 737 is very obvious if not annoying when running. That includes when the autopilot trims. If in fact they ignored the spinning trim wheels and noise as soon as the autopilot moved the elevator to counter the incorrect trim input the trim brake would engage and stop the runaway.
The 737's trim does make a very noticeable clatter when running. But if there is also cacophony of alerts, plus a stick shaker simultaneously making noises and distracting the pilots from listening to trim wheels, I'm not sure we can count on trim system noise to provide sufficient a human factors warning when things are off nominal. The trim brake is another issue.... So many unknowns at this time. Anxiously awaiting for actionable FDR data....