ASN Wikibase Occurrence # 294938
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| Date: | Monday 8 December 2003 |
| Time: | 11:35 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Eagle Air Inc. |
| Registration: | N8343F |
| MSN: | 1160020D |
| Year of manufacture: | 1976 |
| Total airframe hrs: | 7449 hours |
| Engine model: | Rolls-Royce 250 C-20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Moclips, Washington -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Moclips, WA |
| Moclips, WA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter lost engine power while the pilot was conducting long-line operations in support of a timber sale. Following the loss of engine power, the pilot performed an autorotation and competed a forced landing near the base of operations. During the landing, the helicopter sustained substantial damage to the fuselage and tail boom assembly. Post accident examination of the engine assembly revealed heavy black carbon like deposits throughout the turbine section. Additionally, extensive thermal type damage, to include metal splatter, was noted to the first and second stage turbine wheels and nozzles. A number of the turbine blade ends were melted away. Samples of the black carbon like deposits were taken from different locations throughout the turbine assembly and analyzed using Semi-quantitative X-ray Energy Dispersive Analysis. The post examination report concluded that black carbon like deposits were consistent with coked oil. There was no presence of jet fuel in the oil deposits. The origin of the oil could not be determined.
Probable Cause: A sudden loss of engine power during hover for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB SEA04LA025
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 16:03 | ASN Update Bot | Added |
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