As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN; STA 947 LBL 50 WL 208; UPPER SURFACE OF INTERCOSTAL HAS CORROSION UNDER LAV MOUNT / REMOVED CORROSION ON INTERCOSTAL STA 947 LBL 50 ORIG T .230' LOSS .075' REMAINING .155' OUT OF LIMITS IAW B737 SRM 53-70-51-1A-1. REMOVED AND REPLACED INTERCOSTAL 147A5660-3 SRM 51-40-02 AND DWG 147A5650 ID 0054 REV A