What was found
FWD CABIN, FLOORBEAM (BULKHEAD) AT BS 324, RBL 26-RBL 60, UPPER SURFACE HAS SEVERAL AREAS OF CORROSION. REMOVED CORROSION IAW SRM 51-10-02. ORIGINAL MATERIAL THICKNESS .125, AFTER REWORK .106 INCH, REMOVED .019 INCH; L=2 INCHES, W=2 INCHES, D=.019 INCH, FOUND TO BE OUT OF LIMITS IAW SRM 53-00-01, FIG 101. REPAIRED FLOORBEAM (BULKHEAD) AT BS 324, RBL 26 = RBL 60, IAW EA F-5310-131119. THIS REPAIR IS CLASSIFIED AS A CAT "B" MAJOR REPAIR WITH THE FOLLOWING FOLLOW UP INSPECTIONS, IAW EA F-5310-131119; INITIAL AT 37,500 FC, THEREAFTER EVERY 12,000 FC.