Old 23rd Apr 2019, 14:05
  #749 (permalink)  
737 Driver
 
Join Date: Apr 2019
Location: USA
Posts: 217
Originally Posted by fizz57 View Post
I don't believe you'll find any. Firstly because sts trim inputs are relatively small and secondly because the primary driver for sts - airspeed - is cross-compared between the two sides.

Sort of like mcas should have been, and shortly will be.
Do you have a reference? Looking at our FCOM and Maintenance Manual, I see no reference to a speed comparison. The STS seems to work primarily through the active FCC which should only be using the airspeed on the selected side. As a side note, in one Boeing-produced document that I have seen, MCAS is described as a sub-function of the Speed Trim System which leads me to think that the Stall ID function (flaps down) could have the same issue, except of course that it is inhibited by the control column cutout switches.
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