As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2271063) DURING INSPECTION FOUND CORROSION ON FLOORBEAM BTW RBL 23 AND RBL 45 AND Y=328 AT PASSENGER CABIN. CORROSION LEVEL 2, FLOORBEAM BTW RBL 23 AND RBL 45 AND Y=328 WAS REPLACED PER B737-800 SRM 51-40-02-0G PAR.7. D AND SRM 53-10-51-2R REPAIR 7.