As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM KTOL TO KPHL, GEAR LANDING DOOR LIGHT REMAINED ON AFTER GEAR WAS RETRACTED, THE CREW CYCLED THE GEAR AND THE LIGHT REMAINED ON. THE CREW CONTINUED TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE SYSTEM AND CLEANED GLYCOL FROM UPLATCH SWITCHES. THE OPERATIONAL CHECK WAS GOOD AND THE AIRCRAFT WAS RETURNED TO SERVICE IAW DACO MAINTENANCE MANUAL 32-12-1.