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NTSB Report
November 9, 1989 · Mcdonnell Douglas 369HS · N9213F
Oklee, MN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 9, 1989
Injury Outcomes
3 injuries (2 serious injuries, 1 minor injury)
Location
Oklee, MN
Aircraft
Mcdonnell Douglas 369HS
Tail Number
N9213F
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
MKC90LA024
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.
NTSB Probable Cause
AN UNDETERMINED POWER PLANT FAILURE. FACTORS RELATED TO THE ACCIDENT WERE: THE SNOW COVERED TERRAIN, SNOW, AND GUSTY WIND.
Full Narrative
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.
Flight
Event TypeAccident
Event Time09:00 CST
Nearest Airport0nm
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMcdonnell Douglas 369HS
Tail NumberN9213F
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20 · Turboshaft · 400
Seats5
People & Injuries
Injury Summary3 injuries (2 serious injuries, 1 minor injury)
Fatal0
Serious2
Minor1
Uninjured0
Total3
Crew 1Age 40 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind100° @ 8 kt
Visibility7 sm
CeilingOvercast 1200 ft
Temperature / Dew Point27 C / 25 C
Altimeter29.00 inHg
Observation Time14:45
Weather SourceWFAC