What was found
(CAN) CREW REPORTS ON CLIMB WHEN LANDING GEAR WAS SELECTED UP, RETRACTION / EXTENSION MOTOR SOUNDED SLOW AND THEN STOPPED COMPLETELY PART OF THE WAY UP. EMERGENCY EXTENSION WAS CARRIED OUT AND A SAFE LANDING OCCURRED. VISUAL INSPECTION FOUND LT INBOARD MAIN LANDING GEAR DOOR HAD CAUGHT THE INBOARD WHEEL DURING RETRACTION CAUSING THE CIRCUIT BREAKER TO TRIP. GEAR DOORS RERIGGED AND PARTS ORDERED. GROUND AND FLIGHT FUNCTION CHECKS CARRIED OUT. NO FURTHER FAULTS.