As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING THE PUSH BACK, A MAJOR HYDRAULIC FLUID LEAK FROM THE LT WING WAS NOTICED. THE ACFT WAS TOWED BACK AND MAINTENANCE ADVISED. ON-SITE MAINTENANCE FOUND THE LEFT OTBD ROLL SPOILER ACTUATOR CASING FRACTURED. THE ACTUATOR WAS REPLACED, THE NR 2 HYDRAULIC SYS BLEED AND SPOILER SYSTEM TESTED SERVICEABLE. AFTER WHAT THE ACFT WAS RELEASED FOR SERVICE.