What was found
DURING C-CHECK, FOUND AFT CARGO CABIN FLOORBEAM HAS CORROSION BULGE AT BS 967 BL0 TO RBL. REMOVED CORROSION LOSS MATERIAL MORE THAN 20 PERCENT. FABRICATED NEW FLOORBEAM LBL 6 INCH TO RBL 57. MATERIAL T-CHORD 7075 T-6 DIMENSIONS 11.75 BY 1.125 INCH BY 1 INCH BY .063 AND 7.75 INCH BY 1.375 INCH, FABRICATED TWO STRAPS, MATERIALS 7075 T6 D63 AND D71 DIMENSIONS 11.125 INCH BY .9375 AND 7.625 INCH IAW SRM B 737 53-10-9. TREATED AND PRIMED IAW SRM IAW 51-10-2 AND MM 51-21-0. INSTALLED REPAIRED PARTS IAW SRM B 737 51-10-3 AND MM 53-30-2.