What was found
THE FLIGHT CREW REPORTED THAT AS APPROACHING KMFR, WHEN LANDING GEAR DOWN WAS SELECTED DOWN THE 6 LIGHTS REMAINED RED. PILOT DID A GO AROUND AND REFERENCED THE QRH AND ELECTRIC OVERRIDE WAS USED TO EXTEND THE GEAR. ONCE ALL INDICATIONS WERE GOOD PILOT LANDED SAFELY AND TAXIED TO RAMP AND PARKED WITHOUT FURTHER INCIDENT. MAINTENANCE TROUBLESHOT THE FAILURE TO THE LANDING GEAR CONTROL MODULE. ONCE THE FAILED CONTROL MODULE WAS REPLACED ALL LANDING GEAR EXTENSION AND RETRACTION CHECKS WERE NORMAL, AND THE AIRCRAFT WAS RETURNED TO SERVICE.