As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FORWARD LAVATORY FLUID BYPASSED DUMP VALVE ASSEMBLY INTO DRAIN MAINIFOLD AND LEAKED INTO THE SERVICE PANEL AREA. AIRCRAFT WAS AT 32,000 FT AT A TEMP OF -17C, OAT, WHEN THE ICE SHED FROM THE FWD LAV SERVICING PANEL AND CONTACTED THE RT INBOARD WING AND HORIZONTAL STAB AREA. SPECIAL INSPECTION CARRIED OUT IAW MM 55-10-201. FORWARD TOILET TANK DUMP VALVE FOUND AT FAULT. VALVE REPLACED AS PER MM 38-32-31.