As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DAL - FLIGHT 3167, DURING FLIGHT THE CREW REPORTED SMOKE IN THE COCKPIT AND CABIN WITH A PITOT 3 INOP MESSAGE. THE AIRCRAFT RETURNED TO DAL WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE CURRENT SENSOR AND SOCKET FOR THE NUMBER THREE PITOT TUBE, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.