What was found
TOILET FLUSH SYS INOP. LAV 2R & LAV 4L. INDICATOR SAYS LAV TANKS FULL. OPENED AFT CARGO, CHKD LOGIC CONTROL MODULE OF WASTE TANK 3 & FOUND WASTE TANK IMPLODED. WASTE TANK EMPTY. COMPLIED WITH ECRA 3832-01214. PERFORMED VISUAL INSP WITH NO FURTHER FINDINGS. COUPLINGS & LINES TO TANK 1 SERVICEABLE & UNDAMAGED. TANK 3 ISOLATED & PLUG INSTALLED IN LIEU OF FLEXIBLE COUPLING COMMON TO TANK 2. ALL OPENINGS OF TANK. SEALED WITH SPEEDTAPE. BLANKING AT TANK 2. REMOVED AFT WASTE TANK IAW AMM 38-32-11-400-801. INSTALLED AFT WASTE TANK UP TO STEPS H.16, SUBTASK 38-32-11-420-014 IAW AMM 38-32-11-400-801. INSTALLED CABLE ASSY & ACCOMP WASTE TANK INSTALLATION TEST. OPS CHKD GOOD IAW AMM 38-32-11. INSTALLED BRACKET ASSY FOR CAPILLARY TUBE ONTO WASTE TANK IAW AMM 38-21-11.