What was found
CREW REPORTED THAT THE LT MAIN GEAR DID NOT INDICATE DOWN AND LOCKED. PERFORMED A GO AROUND AND A FLY BY OF TOWER. TOWER REPORTED THAT GEAR APPEARED TO BE DOWN. RAN QRH AND F/A REPORTED THAT GEAR LOOKED NORMAL. DECLARED AN EMERGENCY AS A PRECAUTION. LANDED WITHOUT INCIDENT AND STOPPED ON TAXIWAY WHILE ACFT WAS INSPECTED. TAXIED TO GATE. MAINTENANCE INSPECTED AND FOUND BULBS BURNED OUT. MAINTENANCE R & R LIGHT BULBS IAW AMM AND OPS CHECKED GOOD. ACFT IS GOOD FOR SERVICE.