What was found
C HYD QTY EICAS DECREASING RESERVIOR QTY. OBSERVED UPON DESCENT AND ARRIVAL C HYD PRESS EICAS QRH PROCEDURES FOLLOWED INCLUDING ALT FLAP AND GEAT EXTENSION. FOUND PRESSURE OUTLET UNION PACKING DAMAGED/TORN. REPLACED PACKING AND UNION IAW AMM 29-11-19 AND AMM 20-11-00. CLEANED THE AREA IAW AMM 12-25-01. C/OUT OPS CHK OF CENTER HYD SYS IAW AMM 29-11-00, OPS CHK SATISFACTORY. C/OUT CENTER SYS EXTERNAL LEAK CHK IAW AMM 29-11-00, NO LEAK FOUND. SATISFACTORY. A/C OK FOR SERVICE.