As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DEPARTING, EN ROUTE, NR3 HYDR SYS LO PRESS. LIGHT CAME (ON) AND QTY READ 2 PERCENT. ACFT RETURNED TO BASE. INVESTIGATION SHOWED A (BLOWN) SEAL ON PRIORITY VALVE IN THE LANDING GEAR WHEEL WELL. O-RING FOUND DETERIORATED. REPLACED O-RING, FUNCTION TESTED AND RETURNED TO SERVICE.