As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1175 - 71-C209-02, HEAVY CORROSION UNDER SEALER AND STRINGER IN AREA OF STATION 720 TO 720A, TOP SIDE AFT OF CENTER BAY TO STA 720A. REMOVED CORRODED SECTION OF STRINGER AND SKIN. INSTALLED EXTERNAL SKIN DOUBLER SRM 53-30-3 AND STRINGER AND STRINGER SPLICE PER SRM 53-10-3.