As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TRANSFERRING BLEEDS OT APU, SMOKE ENGULFED THE COCKPIT AND CABIN AREA, REQUEST INSP. FOUND ODOR TO BE PRESERVATIVE OIL USED IN APU. PERFORMED OPS CK OF LT/RT ACM`S. RAN ACM`S TO BURN RESIDUAL PRESERVATIVE OIL. NO ODOR NOTED AT THIS TIME.