As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:C RT WLG W/W CANTED BULKHEAD WEB CORRODED AROUND DRAIN HOSE ADAPTOR AT BS 1241 - 1243 RBL 36 - 39. REPAIRED AS PER HAECO RS R-53-48-34796. THE REPAIR IS CONSIDERED TIME-LIMITED TO 24 MONTHS UNTIL AN IMPROVED DRAINAGE MODIFICATION CAN BE INSTALLED IAW BOEING SB 747-51A2054 REV 1 AS PER UPS EO B747-5310-16853-A.