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 947.5 AROUND LBL 4.5 TO RBL 11.0. ACCOMPLISHED PASSENGER CABIN FLOOR BEAM UPPER T-CHORD REPLACEMENT AT STA 947.5 LBL 4.5 TO RBL 11.0 IAW B737-400 SRM 51-40-02 AND E.O. SWA 231022.