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 LOWER SILL FROM FR60 TO FR62 AND STR38R IN AFT CARGO COMPARTMENT; PERFORMED REPAIR ON LOWER SILL FROM FR60 TO FR62 AFT CARGO COMPARTMENT P1 LOC FR62 TO FR61 STR38R IAW SRM 53-41-49-300-003. ALL MAINTENANCE ACTIONS WERE PERFORMED ON NR 218-250306.