As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI AWAY FROM GATE, FLUID WAS SEEN LEAKING FROM THE NR 1 MAIN LANDING GEAR ASSEMBLY. IMMEDIATELY AFTER, THE NR 2 HYDRAULIC SYSTEM WENT INTO ISOLATION MODE. BOTH HYDRAULIC SYSTEMS STILL HAD QUANTITIES DISPLAYED. AIRCRAFT WAS TOWED TO GATE WHERE THE LEFT O/B FLEXIBLE BRAKE LINE WAS FOUND TO BE LEAKING. REPLACED FLEXIBLE LINE AND WAS CHECKED AS GOOD WITH NO LEAKS. BOTH HYDRAULIC SYSTEMS WERE SERVICED.