As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, NR 2 HYDRAULIC SYSTEM BEGAN LOOSING FLUID. AT 1/2 QT LOSS, SYSTEM ISOLATION VALVE CLOSED TO PREVENT FURTHER LOSS OF FLUID. LANDING GEAR WAS CYCLED DOWN BEFORE ISOLATION VALVE CLOSED AS A PRECAUTION. MAINTENANCE FOUND NR 2 ROLL SPOILER UNLOADING VALVE UNSERVICEABLE. REMOVED AND REPLACED VALVE. SERVICED HYDRAULIC SYSTEM AND OPS CHECKED AIRCRAFT IAW MAINTENANCE MANUAL PROCEDURES. CHECKS WERE GOOD.