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 FOUND CORROSION (C57-224-01.05-01) ON FLOORBEAM AT BS 640 LBL 5 TO 33 WL 208. MAINTENANCE FOUND THE CORROSION REMOVAL WAS OUT OF LIMITS AND REMOVED THE DAMAGED AREA. FABRICATED AND INSTALLED REPAIR PARTS IAW UPS EO B727-5310-7313-A.