What was found
FLT 3343 - RIC-DCA - AFTER GO AROUND TO DCA, THE GEAR WAS SELECTED UP AND THE RIGHT MAIN DOOR LIGHT REMAINED ON. AFTER SELECTING GEAR DOWN, RIGHT MAIN GEAR UNSAFE LIGHT CAME ON. SELECTED GEAR UP AND LL LIGHTS WENT OUT. UPON SELECTING GEAR DOWN AGAIN, LEFT AND RIGHT MAIN GEAR GREEN LIGHT CAME ON. THE NOSE GEAR UNSAFE LIGHT STAYED ON FOR APPROXIMATELY 5 SECONDS, THE WENT GREEN. INSPECTED THE RIGHT FORWARD DOOR, AFT DOOR AND SENSORS FOR OPERATION AND SECURITY. ADJUSTED THE RIGHT FORWARD DOOR ACTUATOR ROD END AND SENSOR TARGET. REMOVED AND REPALCED PROXIMITY SWITCH ELECTRONIC UNIT. (W)