As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LAV DUMP VALVE FLAPPER ON WASTE DRAIN IS BROKEN OFF. REMOVE ALL BOLTS OUTSIDE HOLDING LAV DOOR FLAPPER. NEEDS REPLACEMENT OF FLAPPER ASSY PARTS ON TOOL CART IN BACK OF PLANE. REMOVED VALVE PER AMM. VALVE NEEDS TO BE INSTALLED AFTER HEATER GASKET HAS BEEN REPLACED. REPLACED FLAPPER VALVE ASSY.