As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION VACCUME WASTE TANK PAN ASSY INNER SKIN AT LOWER OF DRAIN AND THE AFT LOWER CORNER REF AAR N/R 9909822 REMOVED VACUUM WASTE TANK PAN ASSY AND INSTALLED NEW VACUUM WAST E TANK PAN ASSY P/N 146A7401-21 AS PER SRM 51-40-02-0G-0 AND BOE ING DWG 146A7400 SHEET 34 AND 417A8650 SHEET 1