THE FLIGHT CREW'S IMPROPER USE OF THE ANTI-ICE SYSTEM, WHICH RESULTED IN ENGINE ICE, SUBSEQUENT ICE INGESTION, AND ENGINE FLAMEOUT. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE FLIGHT CREW TO FOLLOW THE CHECKLIST PROCEDURES AFTER FLIGHT INTO ADVERSE WEATHER CONDITIONS, AND THE AIRCREW'S LACK OF FAMILIARITY WITH THE AIRCRAFT REGARDING FLIGHT IN ICING C0NDITIONS.