Originally Posted by
TTail
Now that the MCAS is being classified as a subsystem of the STS wouldn't the below paragraph - possibly without the EFS module part - read like something you'd find in a Boeing MAX AFM if the intent were to give a brief non-technical description of MCAS?
"As airspeed decreases towards stall speed, the speed trim system trims the stabilzer nose down and enables trim above stickshaker AOA. With this trim schedule the pilot must pull more aft column to stall the airplane. With the column aft, the amount of column force increase with the onset of EFS module is more pronounced."
This paragraph has been in my B737NG manual for atleast 12 years but I'm not sure if that particular fact is what would have made me take action if my nose were being trimmed down in an inappropriate manner.
Finally, someone else read the NG manual...