As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AIRCRAFT LOST A SYSTEM HYDRAULIC FLUID UPON TAXIING TO THE TERMINAL. CREW HAD TO USE DIFFERENTIAL BRAKING TO GET TO GATE. AFTER INVESTIGATION IT WAS DETERMINED THAT THE MAIN GEAR ISOLATION VALVE P/N 65-44581-6, S/N 0575 WAS LEAKING.