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, MAIN LANDING GEAR DOOR LIGHT STAYED ILLUMINATED. THE CREW CYCLED THE GEAR AND THE LIGHT STAYED ON. THE CREW RETURNED TO KTOL AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED RIGHT MAIN GEAR DOOR AND ADJUSTED RIGHT GEAR DOOR FOLLOWUP MECHANISM, OPERATIONAL CHECK WAS GOOD IAW DACO DC8 MAINTENANCE MANUAL 32-30-0, AND 32-31-5. AIRCRAFT WAS RETURNED TO SERVICE.