As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** AFT CABIN INTERCOSTAL BS 951 LBL 50 WL 208 AT LAV TIEDOWN FITTING / REMOVED CORROSION ON INTERCOSTAL BS 951 LBL 50 WL 208 IN AN AREA OF L.75' X W.0500' X D.080 IAW SRM 51-10-02-0G-0. FOUND TO BE OUT OF LIMITS I.A.W SRM 53-70-51-1A-1. REMOVED INTERCOSTAL I.A.W. SRM 51-40-02-0G-0. INSTALLED NEW INTERCOSTAL I.A.W. SRM 51-40-02-0G-0 AND BOEING DWG 147A5650 REV. A P/O# 77921911.