What was found
AMF FLT NR 3928. DURING TAKEOFF FROM KBUR, UPON LEVELING AT 5000. PILOT ATTEMPTED TO MOVE THE GEAR HANDLE TO THE UP POSITION, BUT GEAR WOULD NOT RETRACT. PILOT CHECKED CIRCUIT BREAKERS WERE NORMAL AND ATTEMPTED TO MOVE THE GEAR HANDLE TO THE UP POSITION WITHOUT SUCCESS. THE GEAR WAS LEFT IN DOWN POSITION AND PILOT REQUESTED RETURNING TO KBUR AND LANDED WITHOUT INCIDENT. EMERGENCY EQUIPMENT WAS DISPATCHED. MAINTENANCE FOUND GEAR HANDLE JAMMED IN THE DOWN POSITION, DUE TO A LOOSE WIRE AT THE LANDING GEAR CONTROL HANDLE SOLENOID PREVENTING THE SOLENOID FROM RELEASING AND ALLOWING THE HANDLE TO MOVE. THE WIRE WAS RECONNECTED, PER SA227 WIRING MANUAL 32-30-00. GEAR OPERATIONAL CHECK GOOD.