As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING GEAR RETRACTION AFTER TAKEOFF, LANDING GEAR DOWN AND LOCK GREEN LIGHTS REMAINED ILLUMINATED. GEAR WARNING HANDLE LIGHTS CONTINUED TO WORK CORRECTLY. AIRCRAFT MADE UNEVENTFUL LANDING IN ANCHORAGE AND MAINTENANCE REPLACED THE DEFECTIVE LAMP MODULE.