As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LAV SERVICE PANEL INTERVAL PAN HAS CORROSION APPROXIMATELY BS 1680-1700. REMOVED CORROSION AT SERVICE PAN INTERNAL DOUBLER, FOUND TO BE OUT OF THE LIMITS IAW SRM. FAB NEW SERVICE PAN DOUBLER IAW DWG 146N3650, REV H AND SRM AND INSTALLED.