What was found
(CAN) AFTER FLAPS SELECTED TO 10 DEGREES HYDRAULIC PRESSURE DROPPED TO 0 PSI ALTERNATE GEAR EXTENSION USED. FOUND THRUST REVERSER ACCUMULATOR SPLIT IN TWO. WHICH DRAINED ALL HYDRAULIC FLUID AND PUT HOLE IN REAR FUSELAGE. 1. ACCUMULATOR REPLACED SYSTEM GROUND TESTED SEVERAL TIMES. FOUND TO WORK NORMAL. 2. HOLE REPAIRED.3.HYDRAULIC FILTERS CHECKED FOR METAL AND REPLACED. TOTAL HOURS SINCE NEW UNKNOWN TOTAL HOURS SINCE INSTALLED 850.8 HRS.TOTALCYCLES SINCE INSTALLED SEPTEMBER 1998721 CYCLES