As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACFT WAS ROLLING WITH NORMAL BRAKES APPLIED, HAD TO USE EMERGENCY BRAKES TO STOP. ACFT RETURNED TO THE GATE. THE NR 1 HYDRAULIC SYS WAS VERY LOW ON FLUID AND THERE WAS A LEAK NEAR THE RT NACELLE. MAINTENANCE INVESTIGATION FOUND THE RT INBD ROLL SPOILER ACTUATOR WITH A FRACTURED HOUSING. THE ROLL SPOILER ACTUATOR WAS REPLACED AND THE HYD SYS SERVICED. SPOILER ACTUATOR, PN A44700-009, SN 0141.