Originally Posted by
patplan
The MX from the previous sector in DPS had suspected the CAPT's AOA vane had been the culprit, so he replaced that L Vane. Yet on its next flight, the SAME problem occured again with even more "flavors". Therefore, the MX in CGK surmised the AOA vane wasn't the problem - the problem must've lied elsewhere. He instead flushed the pitot and fixed other stuff which he thought to be correlated with what the CAPT wrote on the AFML.
I wouldn't call it the same problem. The problem before was the AoA signal intermittently being missing, causing the loss of air data on the captains side.
After the AoA replacement the problem was a constant offset, i would call that a different error.
Anyway it wasn't two AoA vanes with the constant offset.
It could be that neither AoA vane is at fault and maybe just the installation triggered another problem causing the constant offset.