NTSB Identification: MKC90LA024.
The docket is stored on NTSB microfiche number 40727.
Accident occurred Thursday, November 09, 1989 in OKLEE, MN
Probable Cause Approval Date: 09/30/1991
Aircraft: MCDONNELL DOUGLAS 369HS, registration: N9213F
Injuries: 2 Serious,1 Minor.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
THE PILOT STATED HE WAS FLYING AT 75 TO 100 FT AGL DUE TO SNOW WHEN HE HEARD A LOUD BANG FOLLOWED BY ILLUMINATION OF THE ENGINE OUT LIGHT AND THE ENGINE OUT AUDIO. WHILE MANEUVERING TO A LANDING AREA THE HELICOPTER WAS HIT BY A GUST OF WIND AND THE RIGHT SKID DUG INTO THE GROUND AND BROKE OFF, THEN THE LEFT SKID BROKE OFF. THE ENGINE WAS EXAMINED AND TEST RUN AT THE MANUFACTURER'S FACILITY AND EXHIBITED NO PROBLEM SUGGESTING FAILURE OR MALFUNCTION.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: AN UNDETERMINED POWER PLANT FAILURE. FACTORS RELATED TO THE ACCIDENT WERE: THE SNOW COVERED TERRAIN, SNOW, AND GUSTY WIND.
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