As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN THE FLT DECK AFTER ENGINE START. R & R ACM, OPS CHECK FAILED. BORESCOPE INSPECTION-1 AREA WAS MOIST WITH OIL RESIDUE BUT NOT COLLECTIBLE AS A QUANTITY. FOUND A DIFFUSER DUCT BOLT CLOGGING DRAIN, REMOVED BOLT, R & R NL PROBE O-RINGS. NOTE THAT ENGINE STILL SMOKES WHEN BLEED IS SELECTED. R & R NR 2 ENGINE. OPS AND LEAK CHECK SATISFACTORY.