ASN Wikibase Occurrence # 377334
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| Date: | Friday 26 April 1985 |
| Time: | 09:00 LT |
| Type: | Hiller 12E |
| Owner/operator: | Reforestation Services Inc. |
| Registration: | N99GM |
| MSN: | 1498 |
| Total airframe hrs: | 4053 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Myrtle Point, OR -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | |
| Myrtle Point, OR | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A CFR 137 FLIGHT A TOTAL LOSS OF POWER OCCURRED WITH AN AUDIBLE SCREECH COMING FORM THE ENGINE AREA. AUTOROTATION WAS MADE AND THE ACFT WAS LANDED INTO A HEVILY TREED AREA WITH STEEP TERRAIN. DURING ENGINE TEAR DOWN A FRACTURED IMPELLER WAS FOUND. METALLURGICAL ANALYSIS REVEALED THAT THE FRACTURED IMPELLER WAS DUE TO PROGRESSION OF A PRE-EXISTING FATIGUE CRACK IN THE IMPELLER.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB SEA85LA097
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Mar-2024 10:41 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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