As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING T INSPECTION, FOUND BOLTS ATTACHING SLIDING FLANGE TO FLEXIBLE COUPLING HAVE LOW TORQUE. COTTER KEYS WERE INSTALLED. SLIDING FLANGE AND FLEXIBLE COUPLING HAVE GROOVES WORN ON ATTACHING SURFACE. REPLACED SLIDING FLANGE, FLEXIBLE COUPLING, AND ATTACH HARDWARE WITH NEW.