As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AND EXHAUST APPEARED IN LAV WHEN ENG AND WING ANTI-ICE WAS PLACED ON. EXHAUST SMELLED LIKE OIL AND WAS VERY VISIBLE. IT LEFT A FILM ON LAV MIRROR. FOUND THE SMOKE AND ODOR CAUSED BY A RUPTURE IN THE WING ANTI-ICE BLEED AIR LINE. INSTALLED NEW BLEED AIR LINE BY INCORPORATION OF KIT 128-5051-1 PER RAC DRAWING. CLEARED INSULATION BAGS FROM WING ANTI-ICE DUCTS IN LAV AREA.