Originally Posted by
FCeng84
Per twitter com/ jonostrower the 737 MAX MCAS system runs the stabilizer at 0.27 deg/sec regardless of speed/mach. The amount of nose down stab motion provided by MCAS is listed as "up to 2.5 degrees. MCAS uses the stab trim motors and is disabled via selecting stab cutout.
Just to clarify, the MCAS function "moves the horizontal stabilizer trim upward at 0.27 degrees per second up to 2.5 degrees and 9.26 seconds
at a time." So, each time the MCAS function runs, that's another 2.5 degrees.