As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT SELECTED THE GEAR DOWN AND THE LANDING GEAR DID NOT EXTEND. SMOKE STARTED TO FILL THE COCKPIT AND THE PILOT PULLED THE LANDING GEAR MOTOR CIRCUIT BREAKER TO REMOVE POWER FROM THE LANDING GEAR MOTOR. THE SMOKE CLEARED AND THE PILOT WAS ABLE TO MANUALLY EXTEND THE LANDING GEAR. THE AIRCRAFT LANDED SAFELY WITHOUT INCIDENT, PROPERTY DAMAGE OR PERSONAL INJURY.