As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L/H AFT CABIN AT STA 992 FLOOR SUPPORT ANGLE STRUCTURE UPPER SURFACE HAS CORROSION. GROUNDED - YES. REMOVED CORROSION ON FLOOR SUPPORT IAW B737-800 SRM 51-10-02. NO ALLOWABLE DAMAGE LIMITS STATED. REMOVED AND REPLACED FLOOR SUPPORT IAW B737-800 SRM 51-40-02 AND BOEING DWG#147A5700 REV-.