As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3931 DURING DESCENT THE CREW REPORTED A HYDRAULIC SYSTEM 1 LOW QUANTITY MESSAGE FOLLOWED BY HYDRAULIC SYSTEM 1 FAIL. THE CAPTAIN DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND PRESSURE LINE FROM NR 1 ENGINE HYDRAULIC PUMP RUPTURED. REMOVED AND REPLACED PRESSURE HOSE IAW STANDARD MAINTENANCE PRACTICES 20-10-04. THE AIRCRAFT WAS RETURNED TO SERVICE.