As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PHASE INSPECTION, FOUND RUDDER TO HAVE UNUSUAL NOISE WHEN MOVED. NO EXTERNAL DEFECTS NOTED. INSPECTED WITH BORESCOPE AND FOUND RIB WITH APPROXIMATELY 2.3750 INCH CRACK ORIGINATING AT FORWARD LIGHTENING HOLE. NEW RIB INSTALLED AND RUDDER BALANCED.