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Old 21st Jun 2011, 20:31
  #251 (permalink)  
Lonewolf_50
 
Join Date: Aug 2009
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HazelNuts39
At 2:10:51 AoA was increasing, FPA was passing through a minimum of about 1.5 degrees up ... wmelvin's question reminds me that at that point the stall warning computer (the computer exercising that function) must consider its polled airspeed to be valid, to calculate a stall warning threshold of 6 degrees. Iow the ADR DISAGREE condition occurred later.
Does this mean that all three computer must agree (closely enough) at the threshold value to get a stall warning ...
or
If two of three are polled and agree at the threshold value, you get the warning
or
If any one of the three is polled, and the value hits the threshold value, you get the stall warning?

The last seems least likely from a system's design perspective, in terms of avoiding spurious warnings.

I am trying to understand clearly the point you are making.
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