Accident Sequence
During the final approach to landing, the pilot reported an engine failure and stated that he was lowering the landing gear. The airplane subsequently crashed approximately three miles from the airport. Post-crash examination of the engines found no mechanical discrepancies.
Pilot Actions
Following the engine failure, the pilot did not feather the propeller. The pilot had received no training in the accident airplane or any other multi-engine airplane in more than five years; his most recent previous flight instruction was in a Cessna 172.
Fuel Management
Witnesses reported that the pilot operated the aircraft's fuel system in a manner inconsistent with recommendations. Specifically, he used fuel from the main tanks until they were nearly empty before switching to auxiliary tanks.
Icing Conditions
Despite forecasts indicating light icing conditions, the pilot proceeded with the flight and reported ice accumulation during the flight.
Fatalities
All five occupants of the airplane were killed in the crash.
Probable Cause
The probable cause of the accident was the pilot's improper execution of an emergency procedure, after an engine failure, which resulted in the loss of airplane control. Factors related to the accident were: the pilot's improper management of the fuel system; the pilot's lack of proficiency in emergency procedure; and the flight into known icing conditions.