Originally Posted by
oldoberon
FCENG
so you are 1000 feet and MCAS dials 2.5degrees nose down WHAT DO YOU DO?
1. First thing is pull the column to put in the between 5 to 8 degrees of airplane nose up elevator needed to offset the MCAS stabilizer increment.
2. Use manual pitch trim to re-establish trim to the point of not needing to hold column.
3. If stabilizer runs airplane nose down again, recognize it as inappropriate and arrest by using manual pitch trim to stop MCAS stabilizer motion and move stabilizer back to trimmed position. (No need to sit idly by and watch 10 seconds of stabilizer motion taking you away from trim go in when you have determined that is not appropriate.)
4. Call for PNF to toggle stabilizer cutout switches and discuss managing pitch trim via manual trim wheel for the balance of this flight.
5. Make sure that this event is squawked in a manner that assures:
- The source of the errant stabilizer motion is identified and corrected prior to the next flight
- The next crew to fly this bird knows full well what was encountered on this flight and what was done to work around it.