As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE FROM UNDER INSTRUMENT PANEL AFTER TURNING ON PROPELLER HEAT. MAINTENANCE FOUND CHAFFED WIRE DUE TO CONTACT WITH THE BACKSHELL OF A CANNON PLUG. THE WIRE WAS REPAIRED AND TEH WIRE BUNDLE WAS REPOSITIONED TO PREVENT REOCCURRANCE. THE A/C WAS RETURNED TO SERVICE. (M)