As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** ON AFT SHIELD AT AFT CARGO BAY BS847 - BS867 RBL20 WL164. / DAMAGE EVALUATION ON ACB AFT SHIELD BS 847-867; RBL 20; WL 164; WAS FOUND TO BE OUT OF LIMITS. NO LIMITS GIVEN IN SRM. REMOVED AND INSTALLED NEW ACB AFT SHIELD BS 847-867; RBL 20; WL 164. PER DWG 146A0081; AND SRM 51-40-02 87713U 13OCT20