As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED A LOSS OF B SYSTEM HYDRAULIC FLUID EN ROUTE FROM ABBOTTSFORD TO CALGARY. UPON ARRIVAL IN CALGARY THE NR 1 BRAKE WAS FOUND TO BE LEAKING AT QUICK DISCONNECT FITTING AT THE BRAKE ASSY. WHEN THE FITTING WAS REMOVED THE BACK UP O-RING WAS FOUND DAMAGED. A BRAKE O-RING KIT WAS INSTALLED AND THE AIRCRAFT RETURNED TO SERVICE.