As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DIVERTED TO KGSO DUE TO A HYDRAULIC SYSTEM 1 LOW QUANTITY MESSAGE IN FLIGHT AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE ENGINE 1 ENGINE DRIVEN PUMP LEAKING. THE ENGINE DRIVEN PUMP WAS REPLACED AND THE SYSTEM SERVICED WITH NO FURTHER LEAKS NOTED.