From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)It was first reported that the heater had caused the problem, (smoke in the cockpit). The repair station that tested the heater found no problems with the heater. The mechanic that approved the aircraft for return to service reported that the alternator voltage regulator (main/standby) switch had shorted and failed.
As the FAA filed it
(-23)IT WAS FIRST REPORTED THAT THE HEATER HAD CAUSED THE PROBLEM, (SMOKE IN THE COCKPIT). THE REPAIR STATION THAT TESTED THE HEATER FOUND NO PROBLEMS WITH THE HEATER. THE MECHANIC THAT APPROVED THE AIRCRAFT FOR RETURN TO SERVICE REPORTED THAT THE ALTERNATOR VOLTAGE REGULATOR (MAIN/STANDBY) SWITCH HAD SHORTED AND FAILED.