As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD INFLIGHT T2481/02FEB - NOSE GEAR UNSAFE LIGHT ILLUMINATED AFTER NOSE GEAR RETRACTION. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. ACCOMPLISHED NOSE GEAR SHOCK STRUT SEAL REPLACEMENT AND REPLACED TURNING TUBE CYLINDER AND LOWER BEARING ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION.