As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAXI, A SNAP WAS HEARD BY THE FLIGHT CREW AND HYDRAULIC STEERING CONTROL WAS LOST. THE AC WAS TAXIED TO THE RAMP USING DIFFERENTIAL PWR AND BRAKING. THE STUD SECURING THE HYD STEERING ACTUATOR WAS FOUND SHEARED. THE NOSE GEAR ASSY WAS REPLACED AND AC WAS RETURNED TO SERVICE. THE CAUSE OF THE BROKEN STUD COULD NOT BE DETERMINED. (TC NR 20080213011)