As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD INFLIGHT T1349/05FEB - NOSE GEAR RED UNSAFE LIGHT ILLUMINATED AFTER TAKEOFF DURING GEAR RETRACTION. CYCLED LANDING GEAR WITH NO CHANGE. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. PERFORMED NOSE LANDING GEAR STRUT INSPECTION AND SERVICE. SYSTEM GROUND CHECKED NORMAL OPERATION.