As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, TILLER KNOB DEVELOPED SLACK WHEN TURNING THEN FINALLY POPPED AND ROTATES FREELY. UNABLE TO STEER THE AIRCRAFT WITH THE TILLER. ROLL PIN IN TILLER KNOB SHEARED OFF. INSTALLED NEW PIN, P/N MS16562-30. WORK DONE IAW CE-750 MM. CH. 32-50-00. OPS CHECK GOOD.