What was found
FORWARD LOWER CARGO FUSELAGE STATION 742 AFT BULKHEAD LOWER FLANGE FOR FLOOR PANELS IS CORRODED, UPPER & LOWER SIDES. REPLACED AFT BULKHEAD LOWER FLANGE IAW SRM 51-40-02. SDR INFO PN 453T1637-3, NSN, SUPPORT FOR FLOOR, FS & BS LOC FS 742, CORRODED. ACFT WAS GNDED.