As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN REPORTED THAT DURING CRUISE, ACFT REQUIRED 4 GRADES OF AILERON COMPENSATOR TO MAINTAIN STRAIGHT AND LEVELED FLIGHT. DURING MX REVISION, THE SPIRAL DRIVE PLATE WAS DETECTED BROKEN; SO THE SPIRAL DRIVE PLATE WAS REPLACED IAW MM 27-10-07, TESTED CORRECT.