PPRuNe Forums - View Single Post - AF 447 Thread No. 5
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Old 3rd Aug 2011, 19:53
  #1428 (permalink)  
henra
 
Join Date: May 2010
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Originally Posted by airtren
8 of these bogus Stall Warnings were between 35000ft and 6000ft, which is recoverable height.

4 of these bogus Stall Warning were between 35000ft, and 30000ft, which what would one want more, in terms of recovery?
Hmm, I somehow understand your frustration about this unfortunate systems behaviour, but by all means the Stall warnings were not bogus when they sounded. Even at that time the A/C was still deeply in a stall. Remember this was at Alpha > 30°.
If you want to call something bogus it is the fact that they stopped above a certain AoA.

In this whole event I do not see a single bogus stall warning.
Even not the first ones. Looking at the FDR traces it is clear that at 1,6g the Stall AoA would surely be momentarily exceeded. That should happen somewhere above 1,4g at that speed / altitude.

Still I'm sure the logic for the stall warning will be an item which will be reviewed by Airbus and rightfully so.
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