As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WAS STARTED, ROTOR WAS WOUND UP. HYD PRESSURE CAME ON-LINE FOR NR 1 SYS, NR 2 SYS GAVE ERRATIC INDICATION AND THEN WENT TO ZERO PRESSURE. ACFT WAS SHUTDOWN. NR 2 HYD PUMP WAS REMOVED FROM MAIN GEARBOX. DRIVE SHAFT SPLINES ON PUMP SIDE WERE FOUND STRIPPED OUT. PUMP WAS REPLACED AND THE ACFT WAS GROUND RUN SERVICEABLE.