As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STEERING SYSTEM FAILED TO STAY ENGAGED DURING TAXI. SYSTEM WAS ABLE TO RESET BUT FAILED SEVERAL SECONDS LATER. REPEATED ATTEMPTS TO RESET THE SYSTEM HAD NO POSITIVE EFFECT. REPLACEMENT OF UNIT WAS ACCOMPLISHED IAW THE AIRFRAME AND COMPONENT MFG MM. (K)