What was found
DURING FLIGHT, LAVATORY INOPERATIVE LIGHT ILLUMINATED ON AFT F/A PANEL, DEACTIVATING ALL TOILETS FROM FLUSHING OR DRAINING. ON ARRIVAL SERVICE PERSONNEL NOTED LARGE AMOUNT OF WASTE WAS DUMPED. PERFORMED TOILET FLUSH SYS. ALL TOILETS DO NOT FLUSH REF MM 38-30-00-810 AND TOILET OPS TEST REF MM 38-32-00-700 ALL TOILETS OPS NORMAL. PERFORM LCM BITE PROCEDURE REF FIM 38-30-801 AND LAVATORY INOPERATIVE BITE TEST AT ATTEND PANEL REF FIM 38-30-802. NO DEFECTS NOTED. PERFORM AUTO ZERO TEST REF MM 38-33-00. SERVICED LAVATORYS REF MM 12-17-01. ACCOMPLISHED LCM BITE AND TOILET OPS TEST. NO DEFECTS NOTED AND ALL TOILETS OPS CHECKED GOOD.