What was found
ON APPROACH TO LANDING THE LEFT MAIN GEAR DOWN AND LOCKED (GREEN) LIGHT DID NOT ILLUMINATE WHEN THE GEAR WAS EXTENDED. THE FLIGHT CREW PERFORMED A GO-AROUND TO COMPLY WITH THE CHECKLIST REQUIREMENTS. AFTER GOING THROUGH THE CHECKLIST AND VERIFYING THE GEAR WAS DOWN AND LOCKED, A NORMAL LANDING WAS MADE WITHOUT INCIDENT. MAINTENANCE WAS PERFORMED AND THE LEFT DOWN AND LOCKED (GREEN) LIGHT BULB WAS FOUND TO BE BURNED OUT. A NEW BULB WAS INSTALLED. NO FURTHER DISCREPANCY NOTED.