What was found
ON APPROACH TO PIT FLIGHT 4172 HAD A GEAR INTRANSIT INDICATION BUT NO GREEN LIGHT INDICATION ON THE RT MAIN LANDING GEAR. THE CREW DID A TOWER FLY-BY TO CONFIRM GEAR DOWN. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE RT MAIN LANDING GEAR DOWN AND LOCKED INDICATION BULBS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-61-12. OPERATIONAL CHECKS WERE COMPLETED AND AIRCRAFT RELEASED FOR SERVICE.