As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-09 CHECK INTERGRANULAR CORROSION WAS FOUND ON CABIN FLOORBEAM IN AND AROUND FASTENER HOLES BS 1640. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS TO BE OUT OF LIMITS; REMOVED CORRODED SECTION OF FLOORBEAM BS 1640; FABRICATED A NEW REPLACEMENT SECTION OF FLOORBEAM; INSTALLED REPAIR PART IAW B757-200 SRM 53-00-51, PG. 209-213, FIG. 203.