As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN FLOOR BEAM UPPER SURFACE HAS CORROSION AT STA 986.5, LBL 27 TO LBL 31. PASSENGER CABIN FLOOR BEAM UPPER SURFACE, REMOVED AND REPAIRED TO REMOVE CORROSION AT STA 986.5 LBL 27 TO LBL 31 IAW B737-400 SRM 53-60-51,SRM 51-40-02, SRM 51-20-01 AND E.O. SWA-231021.