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B738 Airspeed Unreliable question

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B738 Airspeed Unreliable question

Old 13th Sep 2020, 10:10
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Join Date: Oct 2014
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B738 Airspeed Unreliable question

During my sim session I had airspeed unreliable without a reliable indicator recognised during the NNC. During final the Flap Load Relief system went on, flaps retracted to 25. Do you know where the system gets the airspeed from?
ogorek is offline  
Old 16th Sep 2020, 21:26
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Join Date: Nov 2002
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Originally Posted by ogorek View Post
During my sim session I had airspeed unreliable without a reliable indicator recognised during the NNC. During final the Flap Load Relief system went on, flaps retracted to 25. Do you know where the system gets the airspeed from?
The flap load relief function is controlled by the FSEU. This receives airspeed information from the left ADIRU. This gets static & pitot pressure inputs from the left air data modules (ADM).
Kirks gusset is offline  

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