What was found
DURING CRUISE AT FL480, THE B SIDE HYDRAULIC SYSTEM FAILED. AMBER CAS MESSAGE B PUMP FAIL, THE B QTY LOW, B PRESSURE DROPPED TO 0 PSI, QTY DROPPED TO 2 PERCENT, BTEMP AT 60 DEGREES. [07-13-07] FOUND RT ENGINE DRIVEN HYD PUMP FAILED INTERNALLY. REMOVED PUMP INSTALLED OVERHAULED UNIT. RAN ENGINE WITH MULE PRESS ASSIST. SYSTEM OPS CHECKS GOOD AT THIS TIME IAW CITATION X MM 29-10-02.