What was found
KTUL - KSBN WHILE MAKING A VISUAL APPROACH TO LANDING IN KSBN, THE GEAR WAS SELECTED DOWN AND THE CREW RECEIVED 3 GREEN INDICATIONS, HOWEVER, THE MAIN GEAR DOORS WOULD NOT RETRACT. A MISSED APPROACH WAS EXECUTED. THE SAME INDICATION WAS RECEIVED WHEN THE LANDING GEAR WAS CYCLED. WITH THE LANDING GEAR EXTENDED, A FLY-BY PAST THE TOWER CONFIRMED THAT THE GEAR DOORS WERE NOT RETRACTED. THE CREW THEN PERFORMED AN ALTERNATE GEAR DOOR RETRACTION WHICH SUCCESSFULLY EXTINGUISHED THE GEAR DOOR INDICATION. A FLY-BY PAST THE TOWER CONFIRMED THAT THE GEAR DOORS WERE RETRACTED, AND A LANDING WAS MADE IN KSBN WITHOUT FURTHER INCIDENT.