As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT LOST HYDRAULIC PRESSURE IN FLIGHT. A WIRE WAS FOUND CHAFING ON THE HYDRAULIC RETURN LINE FROM THE TAIL ROTOR ACTUATOR. THE WIRE WAS CHAFED THROUGH THE INSULATION AND WAS ARCING ON THE HYDRAULIC LINE CREATING A HOLE IN THE LINE CAUSING LOSS OF FLUID.