PPRuNe Forums - View Single Post - AF 447 Thread No. 6
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Old 21st Oct 2011, 13:06
  #1336 (permalink)  
OK465
 
Join Date: May 2011
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Just look at it, see the AOA increase and expect trouble if you dont stop it prior stall range.
Excellent post RetiredF4.

Many attitude display systems incorporate a PLI (pitch limit indicator) that correlates attitude with the onset of the 'stall warning'. This type of display could be utilized in alternate/direct law in conjunction with AOA.

You might have it for years and only register its presence without using it in the daily normal work, but in an abnormal situation it might safe your day.
Exactly. Stand alone or incorporated into an existing display thru the OPC (like the 737 NG PFD & HUD), data for AOA & PLI displays are already there.
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