As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED C-CHECK INSPECTION DISCOVERED FORWARD LAVATORY FLOOR STATION 294.5 WL 208 LBL 12 FLOORBEAM HAS 12 INCHES OF CORROSION. FLOORBEAM CORRODED MORE THAN 50 PERCENT, OUT OF LIMITS. REMOVED CORRODED FLOORBEAM UPPER T-CAP AND SPLICE. FABRICATED REPAIR T-CAP AND SPLICE. INSTALLED IAW B737 53-10-9 AND 51-30-2 FIG 5. (M)