What was found
WHEN GEAR WAS EXTENDED ON APPROACH, ONLY UPPER HALF OF GREEN DOWN AND LOCKED LIGHTS ILLUMINATED. THE GEAR WAS RECYCLED AND CIRCUIT BREAKERS WERE CHECKED. A GO-AROUND WAS PERFORMED AND THE GEAR WAS CONFIRMED DOWN AND LOCKED THROUGH VIEW PORT. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LANDING GEAR LEVER R2-28 RELAY AT FAULT. THE R2-28 RELAY WAS REPLACED AND SYSTEM CHECK ON GROUND WAS GOOD.