As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ACRID ODOR COMES THRU AIR CONDITION SYSTEM WHEN ENGINE ANTI-ICE USED. NOTICEABLE THROUGHOUT COCKPIT AND CABIN. APU OFF. SEEM TO GET BETTER WITH ENGINE ANTI-ICE USE, HIGH POWER RUN PACKS ON EAI ON WAI ON NO ODORS, COFFEE MAKERS ON OVENS ON NO ODORS. E&E INSPECTION NO ODORS.