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Old 7th Aug 2017, 13:17
  #7 (permalink)  
eckhard
 
Join Date: May 2005
Location: France
Age: 69
Posts: 1,142
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It could be that with 1.3g applied above 20,000ft, low-speed buffet may occur before the stick shaker whereas below 20,000ft the stick shaker may activate before the buffet.

So, Boeing have chosen the parameter that should give the earliest warning.
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