As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED TIME REMOVAL OF THE TOILET SERVICE DRAIN VALVE FOUND HEAVY CORROSION ON THE BRACKET ABOVE THE PAN AND SERVICE DOOR INSTALLATION. REMOVED ALL BRACKET THAT HAD CORROSION DAMAGE. REPAIRED INTERNAL STRAPS PER SRM 53-30-03. REPAIRED INTERNAL SECTION USING FLAT PATTERN METHOD WITH SRM 51-20-01.