As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED VAPOR/SMOKE IN THE CABIN AND COCKPIT WHEN SWITCHED TO ENGINE BLEEDS AFTER TAKEOFF. THE ACFT RETURNED TO DEPARTURE WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE R & R THE NR 1 ENGINE, OPERATIONALLY TESTED WITH NO DEFECTS NOTED, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.