As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OUT OF MSP ENROUTE TO ILN, THE CREW REPORTED HYDRAULIC QUANTITY LOSS DOWN TO THE STANDPIPE. FOUND O-RING ON SLOT CONTACT VALVE BLOWN. REMOVED AND REPLACED O-RINGS ON SLOT CONTROL VALVE AS REQUIRED. MOVED ALL FLIGHT SURFACES SEVERAL CYCLES. SERVICED HYDRAULICS TO MAXIMUM. NO LEAKS NOTED FROM RIGHT MANIFOLD.