As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KSMO - KCOS THE CREW REPORTED WHEN EXTENDING THE LANDING GEAR THE RIGHT MAIN GEAR GREEN INDICATION WAS NOT RECEIVED. THE GEAR WAS CYCLED AND THE CREW RECEIVED THE SAME INDICATION. A LIGHT TEST CONFIRMED THE LAMP WAS WORKING. THE CHECKLIST PROCEDURES WERE FOLLOWED AND THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE ADJUSTED THE RIGHT DOWN AND LOCKED SWITCH. THE AIRCRAFT WAS RETURNED TO SERVICE.