As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF NOSE GEAR REMAINED DOWN AND WOULD NOT RETRACT. EMERGENCY/ABNORMAL CHECKLIST COMPLIED WITH AND A NORMAL LANDING. FOUND NOSE GEAR WOULD NOT CENTER WHEN TURNED TO THE LT. TROUBLESHOT TO BAD NOSE WHEEL STEERING UNIT. REMOVED NOSE WHEEL STEERING UNIT FROM ACFT IAW MM 32-50-00. INSTALLED NOSE WHEEL STEERING UNIT IAW MM 32-50-00. ACCOMPLISHED GEAR SWING, NOSE OPS CHECK GOOD. TAXI CHECK GOOD IAW MM 32-50-00.