Originally Posted by
Caygill
Just out of curiosity, looking at the initial report for the last minutes:
1. they find them-self at least 4-5 degree out of trim, cut power to trims trims.
2. the aerodynamic forces and loading is so great that they're unable to operate the trim wheels.
3. they are a 2-3000 feet above ground.
How do you recover without unloading (diving) the aircraft?
Can anyone confirm that electric trim (if enabled) could provide enough force to be able to drive the stab back from full AND at Vmo and any elevator deflection ?
Kind of sounds like it might be a certification requirement, or at least something that Boeing would have flight-tested at some stage in the last 50 years, though probably best not tried at home.
(no criticism intended or implied of the crew's decision to disable stab trim per the checklist)