PPRuNe Forums - View Single Post - Indonesian aircraft missing off Jakarta
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Old 10th Nov 2018, 18:28
  #961 (permalink)  
Gysbreght
 
Join Date: May 2014
Location: In thin air
Posts: 186
According to the FAA Emergency AD, an erroneous Angle of Attack (AOA) input, among other symptoms, can result in indications of:

IAS DISAGREE alert.

ALT DISAGREE alert.

I'm wondering why an erroneous Angle of Attack (AOA) input would cause those alerts. Is it because the pitot-static position error corrections require an AoA input?

Secondly, I wonder what really occured on previous flights. Was it really an UAS situation or were above alerts incorrectly diagnosed as a pitot-static system problem?
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