As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4614, CREW REPORTED THAT THEY HAD AN UNCOMMANDED SWERVING BACK AND FORTH OF THE STEERING SYSTEM, ALMOST RAN OFF RUNWAY. CREW WAS ABLE TO STOP ON TAXI WAY USING RUDDER AND DIFFERENTIAL BRAKING. AIRCRAFT TOWED TO THE GATE WITH A TUG. AIRCRAFT REMOVED FROM SERVICE. UPON FURTHER TROUBLESHOOTING FOUND FEEDBACK POTENTIOMETER INOPERATIVE. REMOVED AND REPLACED FEEDBACK POTENTIOMETER IAW EMB AMM 32-50-07. OPERATIONAL CHECK GOOD. ALSO, ADJUSTED LOAD POTENTIOMETER IAW EMB AMM 32-50-05. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.