As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** ON AFT CARGO BAY INTERCOSTAL AT B.S. 787-807; R.B.L. 6; W.L. 150. / REMOVED AND REPLACED ACB INTERCOSTALL AT BS 787-807 RBL 6 WL 150 DUE TO MORE THAN 100% OF MATERIAL LOSS IN AN AREA OF 2'X2' IAW SRM 51-40-02-0G-0 AND DWG #146A1830