As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR STRUCTURE WET AREA BETWEEN STA 312 AND 294.5 L1 INNER CHORD HAS CORROSION (DOT50-008) (REF AAR N/R 100013049) REMOVED AND INSTALLED MAIN CABIN FLOOR STRUCTURE L1 NEW INNER CHORD AS PER REF B737 SRM 51-40-02-0G-0. DWG141A8110.