As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR SUPPORT STRUCTURE UPPER SURFACE CORRODED BETWEEN STA 312 AND 328 AT APPROX. RBL 55. GROUNDED - YES. REMOVED AND REPLACED R1 DOOR AREA INNER CHORD IAW BAC DWG 141A8310 REV B AND SRM 51-40-02, ORIGINAL MATERIAL THICKNESS .080 REMOVED .025 REMAINING .055 AND WAS BEYOND LIMITS.