What was found
THE LANDING GEAR DID NOT EXTEND NORMALLY WHEN SELECTED. THE PILOT ACTUATED THE EMERGENCY LANDING GEAR HANDLE AND WAS ABLE TO MANUALLY EXTEND THE LANDING GEAR FOR A SAFE LANDING. MAINTENANCE WAS NOT ABLE TO DUPLICATE THE FAILURE AND REPLACED THE CIRCUIT BREAKER AS A PRECAUTIONARY MEASURE. IT WAS LATER DETERMINED THAT A WIRE BECAME DISCONNECTED AND CAUSED THE FAILURE IN FLIGHT. THE WIRE WAS REPAIRED, AND THE AIRCRAFT HAS BEEN RETURNED TO SERVICE.