As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STEERING SYSTEM DISENGAGEMENT DURING TAXI. STEERING DRIFT DURING ENGAGEMENT. STEERING HART TO TURN (NO INPUT). STEERING RELIABILITY VERY LOW. STEERING CONTAMINATION DURING MFG BENCH TESTING. AIRCRAFT RUNWAY EXCURRSION DURING LANDING AND TAXI DUE TO STEERING CONTROL LOSS. AIRCRAFT DAMAGED FROM STEERING DRIFT DURING LANDING. (K)