As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE HEATER CORE END CPA FAILED DUE TO EXCESSIVE DETERIORATED METAL. THE HOT GASSES ENTERED THE DUCT RISER-HOSE-CONTROL VALVE CAUSING SMOKE IN THE COCKPIT. THE PILOT WAS FLYING AT 11,000 MSL AND SHUT DOWN THE ENGINE. PERFORMED AN EMERGENCY LANDING CRASHING THE AIRPLANE ON A ROAD. AIRCRAFT RECORDS WERE NOT DOCUMENTED FOR THE LAST DETAILED VISUAL AND AIR LEAK TEST AT 50 HOURS.