Originally Posted by
GarageYears
Ok, I have to confess I’m confused.
All this talk of manual trim forces, etc.
MCAS applies trim in increments of 2.5 degrees over 10 seconds. Any pilot pickle switch trim ceases MCAS action for 5 seconds.
If MCAS runs again, again any pilot trim action defeats MCAS.
There is is no need to manually trim against any large nose down MCAS trim surely? Electrically trim the aircraft neutral AND THEN DISABLE ELECTRIC TRIM. From then on you are tweaking trim manually and no heroic fight against aero forces is required.
Am I wrong?
- GY
They were already trying to deal with a stickshaker event. Then they followed Boeings list and disabled electrical trim. They then found that they could not use manual trim to recover. As can be seen in videos, manual trim can be a lot harder for some people than others.