As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE ENROUTE, FLIGHT LOST ITS YELLOW HYDRAULIC SYSTEM. DECLARATION OF AN EMERGENCY IS NOT REQUIRED. MAINTENANCE CONTROL ADVISED. RESOLUTION FOUND B-NUT ON YELLOW ELECTRIC HYD PUMP CHECK VALVE LOOSE. TIGHTENED AND LEAK CHECK C/O SATISFACTORY. YELLOW SYSTEM HYDRAULICS SERVICED.