What was found
HYDRAULIC PRESSURE INDICATION ZERO SYSTEM B DEBRIEFED CREW AND THEY STATED ENGINE DRIVEN AND ELECTRIC HYD COVERD IN HYD FLUID. PUMPS WERE SHUT OFF ON B SYSTEM BEFORE SYSTEM WENT EMPTY . W/W M&L UPDATED. CREW REPORTED THAT THEY WERE AT 36K AND 80 MILES FROM DECENT ENGINE LOW PRESSURE LIGHT CAME ON.. THEY SHUT ALL HYDRAULICS OFF BUT THE A PUMP.CREW REPORTED THAT THEY SHUT DOWN THE HYDRAULIC PUMPS BEFORE THE HYDRAULICS WERE DEPLETED. WHEN THEY GOT THE 6 PACK LIGHT FOR HYDRAULICS. THEN THE #2 FOUND B SYSTEM ELECTRIC PUMP ACOUSTIC FILTER LEAKING. REPLACED FILTER PER AMM 29-11-27. LEAK AND OPS CHECKED NORMAL. ADD EMP:121524