What was found
MAJOR REPAIR, DURING C-09 CHECK INTERGRANULAR CORROSION WAS FOUND ON A MAIN CABIN FLOORBEAM AT BS 1640, BS 0 TO LBL 5. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS OUT OF LIMITS; REMOVED EXISTING REPAIR FROM FORWARD SIDE OF FLOORBEAM AND TRIMMED OUT DAMAGED AREA. FABRICATED REPAIR ANGLE, FILLER, AND STRAP; INSTALLED REPAIR PARTS IAW B757-200 SRM 53-00-51, FIG. 205, PG. 216-219.