As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW CONDUCTED A MISSED APPROACH AFTER THE RT MAIN GEAR DOWN AND LOCK GREEN LIGHT FAILED TO ILLUMINATE AFTER GEAR DOWN SELECTION. AN EMERGENCY WAS DECLARED AND ACFT LANDED WITHOUT FURTHER INCIDENT. MX FOUND THAT THE LIGHT WAS NOT TESTING AND CONCLUDED TO A FAULTY LIGHT ASSY. THE LIGHT ASSY DRAWER PN 434-092-008 REF IPC 33-16-71-50-155 WAS REPLACED TESTED AND THE ACFT RETURNED TO SERVICE.