As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING D-CHECK, STATION 420 AFT SIDE OF RIB STRINGER 3L HAS CORROSION THROUGH STRINGER TOP FLANGE. CUT OUT DAMAGED SECTION AS PER SRM 53-10-3. INSTALLED 1 INCH BY .5 INCH REPAIR AS PER SRM 53-10-3 FIG 2 PART 1 10 INCH J-ANGLE BAC 1493-508.