As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE D CHECK INSPECTION, CORROSION WAS FOUND ON THE RIGHT RUDDER EXTERNAL PLATING BETWEEN STATIONS ZR145 TO ZR150. REPAIR ACCOMPLISHED REMOVAL OF DAMAGED AREA, FABRICATION AND INSTALLATION OF AN INTERNAL FILLER AND AN EXTERNAL REPAIR DOUBLER IN ACCORDANCE WITH DER APPROVED DRAWING C88-R09 AND ENGINEERING ORDER 27-DC8-754.