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Bismarck, ND
THE ACFT WAS OBSERVED DESCENDING OUT OF A LOW CEILING WHEN IT SUDDENLY MADE AN ABRUPT LEFT TURN. ENGINE NOISE SEEMED TO INCREASE MOMENTARILY AND THEN THE NOSE OF THE ACFT DROPPED TO A NEAR VERTICAL POSITION. THE TWIN ENGINE ACFT CRASHED INTO A VACANT HOUSE TRAILER DESTROYING THE ACFT. SUBSEQUENT EXAMINATION OF THE WRECKAGE REVEALED 2 FUEL INJECTOR NOZZLES OF THE LEFT ENGINE WERE CLOGGED WITH FOREIGN MATERIAL AND CONTAMINATION WAS FOUND IN THE FUEL CONTROL UNIT OF THE SAME ENGINE.
THE ACFT WAS OBSERVED DESCENDING OUT OF A LOW CEILING WHEN IT SUDDENLY MADE AN ABRUPT LEFT TURN. ENGINE NOISE SEEMED TO INCREASE MOMENTARILY AND THEN THE NOSE OF THE ACFT DROPPED TO A NEAR VERTICAL POSITION. THE TWIN ENGINE ACFT CRASHED INTO A VACANT HOUSE TRAILER DESTROYING THE ACFT. SUBSEQUENT EXAMINATION OF THE WRECKAGE REVEALED 2 FUEL INJECTOR NOZZLES OF THE LEFT ENGINE WERE CLOGGED WITH FOREIGN MATERIAL AND CONTAMINATION WAS FOUND IN THE FUEL CONTROL UNIT OF THE SAME ENGINE.