As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI FOR TAKEOFF, AIRCREW NOTICED THE "MASTER CAUTION" ILLUMINATED WITH NR2 HYD PUMP CAUTION LIGHT. THEY ALSO NOTICED THE NR 1 AND NR 2 HYD QUANTITIES WERE LOST. AIRCREW SHUTDOWN ENGINES IAW CHECKLIST. MX CREW NOTICED THE NR 2 BRAKE LEAKING IN EXCESS. THEY R & R THE NR 2 BRAKE ASSY, SERVICED THE ACFT NR1 AND NR2 HYD SYS, PERFORMED LEAK AND OPS CHECK OF THE NR 2 BRAKE ASSY AND SYS CHECKED SATISFACTORY. ACFT WAS RETURNED TO FLIGHT STATUS.