What was found
FAT - LANDING GEAR POSITION INDICATION LIGHTS REPORTED PARTIALLY INOPERATIVE DURING GEAR EXTENSION FOR LANDING. CREW INITIATED A GO AROUND DUE TO GEAR POSITION INDICATION PROBLEM. AIRCRAFT LANDED WITHOUT INCIDENT ON SECOND APPROACH. MAINTENANCE REPLACED THREE GEAR DOWN INDICATION LAMPS IN LANDING GEAR POSITION INDICATOR. GEAR POSITION INDICATION LIGHTS GROUND CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE. (M)