THE PILOT WAS BRIEFED ON THE ENROUTE WEATHER PRIOR TO DEPARTURE. RECORDS INDICATE THAT SIGMETS ON ICING AND TURBULENCE ALONG THE ROUTE WERE PROVIDED TO THE PILOT. WHEN THE PILOT ENCOUNTERED ICING CONDITIONS IN FLIGHT, HE CONTINUED INSTEAD OF TURNING BACK TO NON-ICING CONDITIONS. STRUCTURAL ICE ACCUMULATED VERY RAPIDLY. VECTORS WERE REQUESTED AND RECEIVED TO FLY TO THE NEAREST AIRPORT. THE PILOT REPORTED THAT MORE ICE ACCUMULATED DURING THE DESCENT AND HE WAS UNABLE TO SEE THROUGH THE WINDSHIELD. A CRASH LANDING WAS MADE ACROSS THE RUNWAY. WITNESSES REPORTED A THICK COVERING OF STRUCTURAL ICE ON THE AIRCRAFT WRECKAGE AFTER THE ACCIDENT.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

Contributing Factors

WEATHER CONDITION..RAIN

Contributing Factors

WEATHER CONDITION..ICING CONDITIONS

Contributing Factors

WING..ICE

Contributing Factors

WINDOW,FLIGHT COMPARTMENT WINDOW/WINDSHIELD..ICE

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