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 WEB UPPER SURFACE HAS CORROSION GROUNDED - YES. REMOVED CORROSION IAW B737-800 SRM 51-10-02, 100% MATERIAL LOSS OUT OF LIMITS. REMOVED AND REPLACED WEB IAW B737-800 SRM 51-40-02 AND BOEING DWG 147A5700 REV B