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Old 31st May 2011, 18:50
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DozyWannabe
 
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Originally Posted by rgbrock1
But WHAT caused the horizontal stabilizer to be at 13 degrees?
I understand the freezing part but WHAT is just as vital.
The truth is that we don't know yet, but it's looking likely that the THS was trimmed in response to pilot input (in Alternate Law 2, autotrim follows the sidestick commands when the limit of elevator authority is reached).

The important questions that raises are:
  • If that is the case, why did the PF command and hold full back-stick in this manner?
  • Did the pilot know that doing so would cause the trim to move once the limit of elevator authority had been reached?
  • Did the pilot know that all it would take to remedy that part of the situation would be to wind the manual trim wheel forward (which disengages autotrim permanently for the flight)?
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