What was found
FWD CARGO PIT, AFT BULKHEAD LWR BEAM PRESSURE PANEL IS CORRODED APPROXIMATELY 6 INCHES LBL ON UNDER SIDE, AND IN SEVERAL OTHER AREAS OF LWR BEAM AROUND NUTPLATE HOLES. REMOVED CORROSION ON LOWER BEAM FOR BULKHEAD PRESSURE PANELS ON AFT BULKHEAD IN FWD CARGO PIT LBL 6 AND SEVERAL OTHER AREAS, LEFT SEGMENT AREA 1" X 1.75" X .029 REMAINING MATERIAL .035, RIGHT SEGMENT AREA 1" X 1" X .019 REMAING MATERIAL .045 ORIGINAL THICKNESS .064, BOTH AREAS FOUND OUT OF LIMITS IAW SRM 53-10- 1. REPLACED LOWER BEAM IAW DRAWING 65-57172 AND SRM 51-30-2. THIS IS CLASSIFIED AS A MINOR REPAIR