As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING A SERVICE BULLETIN ON PRIMARY SERVO (SB KS271C-5 ALERT NOTED THE SERVO GEAR TEETH TO HAVE EXCESSIVE WEAR. GEAR BEARING APPEARS TO BE MAKING METAL. THERE WAS A BLACKISH METAL POWDER RESIDUE UNDER THE GEAR. WHEN THE GEAR IS TURNED BY HAND IT DOES NOT ROTATE SMOOTHLY AND MAKES A SLIGHT GRINDING NOISE. ACFT TOTAL TIME: 325 HOURS. (TIM AND PITCH SERVOS NORMAL). (X)