ASN Wikibase Occurrence # 66392
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| Date: | Monday 13 July 2009 |
| Time: | 10:15 |
| Type: |  Robinson R44 Astro |
| Owner/operator: | Private |
| Registration: | N244HP |
| MSN: | 0427 |
| Year of manufacture: | 1997 |
| Total airframe hrs: | 1106 hours |
| Engine model: | Lycoming O-540-F1B5 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Location: | Near Yuba River, Marysville, California -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Auburn Municipal Airport, Auburn, California (AUN/KAUN) |
| Auburn Municipal Airport, Auburn, California (AUN/KAUN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Substantially damaged at 10:15 PDT (Pacific Daylight Time) on July 13, 2009 when flew into power lines near Yuba River, Marysville, California (at approximate coordinates 39'22.8056"N, 121'30.8056"W). No injuries sustained by the three persons on board (pilot and two passengers).
The private pilot reported that he was flying the helicopter about 500 feet above the ground and decided to descend to follow a riverbed. While descending to the river, one of the passengers alerted him to the presence of power line wires that obstructed their flight path. The pilot applied full aft cyclic and collective in an attempt to avoid colliding with the wires; however, the tail boom and tail rotor contacted the wires. The impact resulted in the separation of the tail rotor blades and the bottom section of the vertical stabilizer from the helicopter.
Following the collision the pilot initiated an autorotation. Upon touchdown, the helicopter bounced and when it touched down again, it was moving sideways to the left and rolled over. The helicopter came to rest on the bank of the river on its left side. Examination of the helicopter revealed substantial damage to the main rotor assembly, the tail rotor assembly, vertical stabilizer, tail boom, and fuselage. The pilot reported that there were no mechanical anomalies with the helicopter prior to the accident.
Probable Cause: The pilot’s failure to maintain adequate clearance from the power line wires.
Accident investigation:
 |
|
Sources:
NTSB
2. FAA Registration: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=N244HP
3. http://helihub.com/2009/07/14/14-jul-09-n244hp-robinson-r44-marysville-us-california/
4. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=50534
5. http://www.aviationdb.com/Aviation/Aircraft/2/N244HP.shtm
6. https://uk.flightaware.com/resources/registration/N244HP
7. https://abpic.co.uk/pictures/view/1099911
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Jul-2009 07:18 | slowkid | Added |
| 14-Jul-2009 07:28 | slowkid | Updated |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 02-Dec-2017 15:47 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
| 05-Nov-2018 23:56 | Dr.John Smith | Updated [Time, Aircraft type, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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