As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAXI FOR TAKEOFF, THE NR 1 HYDR SYS, PRESSURE AND QUANTITY, DEPLETED. ACFT WAS TOWED BACK TO THE GATE. UPON MAINTENANCE INSPECTION, IT WAS FOUND THAT THE NR 2 INBD SPOILER ACTUATOR WAS CRACKED. THE ACTUATOR WAS REPLACED AND THE APPLICABLE LEAK AND FUNCTION CHECKS WERE ACCOMPLISHED.