As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON REPAIR ANGLE OF STR 29R LOCATED BTW FR76 TO FR77 IN AFT CARGO COMPARTMENT. PERFORMED PERMANENT REPAIR ON STR 29R LOCATED BETWEEN FR76 TO FR78 IN AFT CARGO COMPARTMENT IAW SRM 53-23-03 REPAIR 51 FIG 212.