As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE IS SMOKE IN THE COCKPIT, PACKS WERE OFF AND GROUND AIR WAS ON. TURNED OFF UTILITY BUSS AND RECIRCULATION FANS. SMOKE WENT AWAY. FOUND BAD PART OUT OF STOCK (INSTALLATION OF CABIN AIR RECIRCULATION FAN (LEFT) ) BEARING FAILURE. REINSTALLED CABIN AIR RECIRCULATION FAN (LEFT)