As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR DOOR OPEN LIGHT ILLUMINATED ENROUTE BDL-DTW. FLIGHT WAS CONTINUED TO DESTINATION AND LIGHT REMAINED ON AFTER GEAR EXTENSION. EMERGENCY GEAR EXTENSION PROCEDURES WERE UTILIZED FOR LANDING. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED PSEU AND RIGHT AND LEFT MAIN GEAR DOOR PROXIMITY SENSORS. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.