Originally Posted by
Double07
My two posts above explained how a large offset angle could be induced in the AoA sensor during the testing process after sensor replacement. This would have been made more likely by a failure during a rework process to tighten a set screw to a required torque in an internal gear of the AoA sensor. This led me to postulate that the replacement sensor may have been a reworked sensor, which was subsequently confirmed by an actual report. This is all consistent with the latest report that the sensor failed a test at the manufacturer in Minneapolis. This does not mean that the original sensor as manufactured by Rosemount was defective. It merely means that a shoddy rework process in a repair facility may have left the sensor susceptible to change during the installation testing process. One of my original posts above describes how this may have happened.
All of the above are theoretically possible. None have actually been demonstrated to be the case.