What was found
LANDING GEAR MOTOR FAILED RESULTING IN SMOKE IN THE COCKPIT. REMOVED LANDING GEAR MOTOR, DISASSEMBLED, FOUND BRUSHES IN GOOD CONDITION. FOUND ARMATURE BURNT AND FIELD COIL ASSEMBLY BURNT. BEARINGS WERE FOUND TO BE IN GOOD CONDITION. SUBMITTER SUGGESTED A POSSIBLE CAUSE AS FAILURE OR INTERNAL SHORTED ARMATURE.