As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED HYDRAULIC #1 SYSTEM LOW QUANTITY MESSAGE IN FLIGHT. FLUID DEPLETING RAPIDLY. THE AIRCRAFT DIVERTED INTO BUF AND LANDED WITHOUT FURTHER INCICENT.MAINTENANCE INSPECTED FOUND A PERMASAGE FITTING LEAKING FORWARD OF THE WINGBOX. THE FITTING WAS SWAGED AND OPERATIONAL CHECKS WERE GOOD.