As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 714, CLT-PVD: ON APPROACH, CREW SELECTED GEAR DOWN AND FOUND MAIN GEAR INDICATIONS NOT WORKING PROPERLY. ABORTED APPROACH AND HAD TOWER VISUALLY CONFIRM GEAR DOWN. CREW SWAPPED BULBS AND HOUSINGS IN FLIGHT TO ASSURE GEAR DOWN. LANDED WITH NO FURTHER DIFFICULTIES. MAINTENANCE REPLACED THE LEFT GEAR GREEN LIGHT CAPSULE AND REPLACED RIGHT GEAR AND NOSE GEAR LIGHT BULBS.