ASN Wikibase Occurrence # 157869
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| Date: | Monday 29 July 2013 |
| Time: | 11:40 |
| Type: |  Hughes 369D |
| Owner/operator: | Dah Aircraft Llc |
| Registration: | N31HM |
| MSN: | 1160027D |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 10446 hours |
| Engine model: | Rolls Royce 250C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Center Point, Wetzel County, WV -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Cargo |
| Departure airport: | Center Point, WV |
| Center Point, WV | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, after trimming the top portion of a tree during helicopter tree-trimming operations, the engine experienced a gradual loss of power. The rotor rpm then began to decrease, and the “engine out” alarm illuminated and sounded. The pilot maneuvered to avoid power lines; however, during the descent, the rotor blades struck a power line pole, and the helicopter impacted the ground, which resulted in substantial damage to all five main rotor blades and the left landing skid. Postaccident examination of the engine and airframe and the air, fuel, and oil systems revealed no anomalies that could have contributed to the loss of power.
Probable Cause: A total loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 8 September 2007 | N31HM | Northwest Helicopters, Inc. | 1 | Ellensburg, WA | |
non |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Jul-2013 23:38 | Geno | Added |
| 30-Jul-2013 23:48 | Geno | Updated [Operator] |
| 28-Aug-2014 06:21 | Aerossurance | Updated [Time, Operator, Location, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 29-Nov-2017 08:50 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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