As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE-N/A, AT FL35 HYD SYS PRESS WENT TO ZERO, HYD QTY DROPPED TO JUST ABOVE THE X-POSITION AND THE RUDDER AND AILERON MANUAL CONTROL LIGHTS ILLUMINATED. HYD FAILURE CHKLIST ACCOMPLISHED. FLUID BEGAN TO DECREASE RAPIDLY WITH AUX PUMP ON. FOUND STANDBY RUDDER PUMP LEAKING FROM DRAIN LINE. REPLACED STANDBY RUDDER PUMP AND TAGGED, REMOVED PART HOLD FOR EVALUATION.