What was found
DURING CLIMB OUT GOT A HYD 1 LO PRESS CAS MSG. LOOKING AT THE HYD SYNOPTIC #1 QTY SHOWS 0 & HYD 1 PRESSURE WAS 0. AFTER GAINING ACCESS TO AFT ACCESSORY COMP NOTED HYD FLUID SATURATING AREA. ON FURTHER INSP NOTED #1 ENG HYD RETURN LINE LOOSE & CHAFING BRACKET IB OF PYLON. BEGAN CLEAN UP OF HYD FLUID. REMOVED #1 ENGINE EDP PRESSURE LINE FROM PYLON BRACKET TO HYD MANIFOLD. LINE WAS NOT LOOSE; BULKHEAD FITTING IS LOOSE & WORN. RESECURED RACK AFTER CLEANING HYD FLUID RESIDUE FROM UNDER RACK MOUNTS #1 EDP PRESSURE LINE AT HYD MANIFOLD FOUND TO BE AT FAULT. PRESSURE LINE REPLACED #1 ACMP AND #1 EDP REPLACED, AFT EQUIPMENT BAY CLEANED #1 SYS HYD FILTERS REPLACED #1 HYD SYS FLUSHED/SERVICED & LEAK CHECKED.