As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FOR C-CHECK, MAINTENANCE REPORTED FWD LOWER CARGO STA 640 BETWEEN LBL 44 TO 62. FLOOR BEAM UPPER FLANGE AFT SIDE HAS HEAVY EXFOLIATION CORROSION IN SEVERAL PLACES. REPAIRED DAMAGE AREA OF FLOOR BEAM LBL 8 TO LBL 62 IAW SRM 53-10-8 FIG 5, SRM 51-30-2.