As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, EXPERIENCED MAIN HYDRAULIC SYSTEM PRESSURE LOSS. HYDRAULIC QUANTITY REMAINED AT NORMAL. AN EMERGENCY WAS DECLARED AND INITIATED EMERGENCY CHECKLIST ITEMS. HYDRAULIC SYSTEM WAS PLACED INTO BYPASS AND SYSTEM PRESSURE RETURNED TO NORMAL. ELECTED TO PERFORM A HYDRAULIC SYSTEM OUT LANDING. GEAR AND FLAPS WERE EXTENDED SUCCESSFULLY USING BYPASS PROCEDURES. LANDING WAS NORMAL. NO OTHER ABNORMALITIES WERE ENCOUNTERED DURING THE FLIGHT.