As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN AFT WET AREA FLOOR SUPPORT BETWEEN STA 947 AND STA 967 LBL 51 HAS CORROSION REF AAR N/R 99880671 CORROSION FOUND TO BE OUT OF LIMITS AT FLOOR SUPPORT BEAM STA 947 TO STA 967 LBL 51 AS PER REF B737 SRM 53-70-51 REMOVED AND REPLACED FLOOR SUPPORT PER REF B737 SRM 51-40-02.