ASN Wikibase Occurrence # 368269
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| Date: | Friday 4 August 1989 |
| Time: | 12:00 LT |
| Type: |  Bell 206-B2 |
| Owner/operator: | Imperial International Inc. |
| Registration: | N96117 |
| MSN: | 975 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 4460 hours |
| Engine model: | Allison 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sebeka, MN -
 United States of America
|
| Phase: | Approach |
| Nature: | Survey |
| Departure airport: | Motley, MN (18MN) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT WAS ON AN APPROACH TO A FIELD SITE WHEN HE HEARD A LOUD 'BANG' FOLLOWED BY AN ENGINE OUT LIGHT AND AUDIO WARNING. THE PILOT EXECUTED A FORCED LANDING, WITH LOSS OF TAIL ROTOR CONTROL, WHICH RESULTED IN A HARD LANDING. TEARDOWN AND EXAMINATION OF THE ENGINE REVEALED THAT THE FIRST STAGE TURBINE WHEEL FRACTURED DUE TO THERMAL FATIGUE CRACKING.
Probable Cause: POWER PLANT FAILURE DUE TO A FRACTURE OF THE FIRST STAGE TURBINE WHEEL, RESULTING IN AN UNCONTROLLED AUTOROTATION.
Accident investigation:
 |
|
Sources:
NTSB MKC89LA176
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 16:35 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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