As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR STRUCTURE, INTERCOSTAL LOCATED AT BS 294.5-BS 312, LBL 11.10 CORRODED. GROUNDED, YES. CHECKED LIMITS ON INTERCOSTAL AND FOUND TO BE BEYOND THE LIMITS IAW SRM 53-10-51-1A-1. REMOVED AND REPLACED INTERCOSTAL IAW BAC DWG 141A5600 REV N AND SRM 51-40-02.