As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TUL - FLT 1923 - AFTER TAKEOFF TUL DURING GEAR RETRACTION, THE GEAR DOOR LIGHT STAYED ON AS WELL AS THE RED NOSE GEAR LIGHT. RETURNED TO TUL AND LANDED WITHOUT INCIDENT. REPLACED NOSE GEAR RETRACT ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION. (X)