What was found
ON APPROACH, THE PILOT SELECTED THE LG HANDLE TO THE EXTEND POSITION, THE LT MLG POSITION INDICATOR LIGHT DID NOT ILLUMINATE. THE PILOT TRIED TO CYCLE THE LG WITH THE SAME RESULTS. THE PILOT PERFORMED A MANUAL EXTENSION OF THE LG, THE LT MAIN GEAR LIGHT REMAINED OFF. THE PILOT PERFORMED A PRECAUTIONARY FLYBY OF THE ATC TOWER & RECEIVED VISUAL CONFIRMATION THAT LG WAS DOWN, PILOT LANDED WITHOUT FURTHER INCIDENT. TROUBLESHOOTING REVEALED BURNT OUT LIGHT BULBS. REPLACED THE LIGHT BULBS. THE LT MAIN GEAR DOWN ANNUNCIATOR LIGHT FUNCTIONAL TESTED SATISFACTORY.