As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COS - INFLIGHT, CREW REPORTED NOSE LANDING GEAR GRINDING OR SPINNING NOISE ON RETRACTION WITH BURNING RUBBER ODOR NOTED. RETURNED TO COS AND LANDED WITHOUT INCIDENT. REPLACED LEFT AND RIGHT NOSE TIRES AND ACCOMPLISHED STRUT SERVICE. SYSTEM GROUND CHECKED NORMAL OPERATION.