PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures Mk II
Old 24th Dec 2019, 16:54
  #227 (permalink)  
Join Date: May 2010
Location: Boston
Age: 69
Posts: 441
Originally Posted by safetypee
MCAS activation is no more unusual than STS operation.
Originally Posted by Takwis View Post
Except that it moves the trim farther, and faster, and usually in the opposite direction.
Although MCAS 1.0 was given a huge authority range in "normal" activation it would likely use much less, just enough to get AoA back where it wanted it.

Thus a normal activation might not be all that noticeable, especially given that STS is also tweaking trim although in opposite direction.

Question for 737 pilots:
Unless one was looking at the trim wheel would you even notice that a particular (short, not pathological) trim tweak was opposite the expected STS direction in a dynamic situation where MCAS would trigger?
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