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Old 31st May 2011, 02:32
  #51 (permalink)  
FlexibleResponse
 
Join Date: May 2002
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RECOVERY LAW...sorry, perhaps I should have said ABNORMAL ATTITUDE LAW...(see your FCOM).

Forgive me, I am getting old ...my memory is fading...

But please don't lose my essential message in the semantics.

The STABILIZER stopped at 13 degrees (aircraft nose up) when the new flight control law was encountered. This LIMITED the pitch control power (authority) that was available to the pilots to reduce the pitch attitude (and thereby reduce Alpha). This made the chances of recovery of the aircraft from uncontrolled flight UNLIKELY or IMPOSSIBLE.

In essence I am saying:

1. The STABILIZER (which in normal law continuously trims automatically) FROZE at 13 degrees.

2. None of the pilots realized that it had stopped auto-trimming.

3. None of the pilots realized that the MANUAL PITCH TRIM WHEEL HAD to be manually repositioned so that the the aircraft could be recovered from uncontrolled flight.

4. Why the pilots didn't realize and act upon the MANUAL use of the PITCH TRIM WHEEL is the heart of this accident investigation.
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