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Old 16th Mar 2019, 20:37
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wiedehopf
 
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Originally Posted by CONSO
But since the ' active' AOA sensor changes from left to right, depending n power down and or WOW, and the default is ?? what sensor was checked/replaced ? Not clear from log
The FDR traces for the sensor data are separate, nothing switches.
Also the captains air data are always from the captains AoA sensor, those were intermittent.

Only thing that switches between flights is the FCC which is used for MCAS or something.
In this case after the maintenance in Denpasar, the left FCC (connected to captains AoA) was used for MCAS.
Then the following flight it was again the left FCC since the aircraft was powered down over night.

So yes it is quite clear which AoA sensor was replaced and on the following two flight provided wrong data.
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