As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 0761194) CORROSION ON FLOOR SUPPORT STRUCTURE (2EAS) AT STA 990, LBL50- LBL 57 & RBL 50- RBL 57 IN AFT PAX CABIN. FLOOR SUPPORT STRUCTURE AT STA 990, LBL 50- LBL 57 IN AFT PAX CABIN WAS REPLACED PER B737-800 SRM 51-40-02-0G AND WITH NRC 00374.