As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EXTERNAL LIFT OPERATIONS AUX SERVO LIGHT ILLUMINATED AND LOST ALL AUX SERVO PRESSURE. AIRCRAFT RELEASED EXTERNAL LOAD IN HARBOR AND MADE SAFE LANDING AT BASE. MAINTENANCE PERFORMED TROUBLE SHOOTING. THE AUX HYD. PUMP WAS REPLACED AND OPERATIONAL CHECKS WERE NORMAL. NO OTHER DISCREPANCIES NOTED.