As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE SCHEDULED MAINTENANCE, DISCOVERED RIGHT ANGLE ON VERTICAL AFT SPAR HAS CORROSION ABOVE AND BELOW UPPER RUDDER HINGE BRACKET. REMOVED CORROSION AND BLENDED AREA ON VERTICAL AFT SPAR RIGHT ANGLE AS REQUIRED AND INSTALLED WEB FLANGE STRAP.