What was found
THE CABIN AUX HEAT SYS MALFUNCTIONED PRODUCING SMOKE IN CABIN DUE TO OVERHEATING. THE AUX CABIN HEAT SWITCH WAS IN THE OFF POSITION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE CABIN AUX HEAT SYS MALFUNCTIONED PRODUCING SMOKE IN CABIN DUE TO OVERHEATING. THE AUX CABIN HEAT SWITCH WAS IN THE OFF POSITION.