As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEL - CREW REPORTED LOSS OF RIGHT HYDRAULIC SYSTEM RIGHT HYDRAULIC PUMP FAILURE. EMERGENCY DECLARED FLIGHT RETURNED DEL LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT ENGINE HYDRAULIC PUMP AND FILTERS. SYSTEM GROUND CHECK NORMAL OPERATION.