As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR EXTENSION, LT MAIN GEAR GREEN INDICATION DID NOT ILLUMINATE. A GO AROUND WAS INITIATED & CHECKLIST PROCEDURES FOLLOWED WITH NO HELP. AN EMER WAS DECLARED & LANDING WAS UNEVENTFUL. TROUBLE SHOT THE DISCREPANCY TO AN INOPERATIVE LT MAIN GEAR INDICATOR LIGHT BULB. BULB WAS REPLACED & OPERATIONAL CHECKED OK. ACFT WAS RTS.