As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A, AIRCRAFT HAS BURNING SMELL WHEN ANTI ICE IS SELECTED ON. SMELL WENT AWAY WHEN ANTI ICE SELECTED OFF. PACK TEMPS WERE BOTH AT 25 DEGREE C AND BOTH MANIFOLD TEMPS WERE AT 200 DEGREES C. REPEAT WRITE UP, STILL TROUBLESHOOTING AT THIS TIME.