ASN Wikibase Occurrence # 281925
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| Date: | Tuesday 23 August 2022 |
| Time: | 15:47 LT |
| Type: |  Bell 206B JetRanger II |
| Owner/operator: | Tennessee Dept Of Safety |
| Registration: | N770HP |
| MSN: | 4624 |
| Year of manufacture: | 2007 |
| Total airframe hrs: | 5674 hours |
| Engine model: | Rolls Royce 250-C20J |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Whiteside, TN -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | Jasper-Marion County Airport, TN (APT/KAPT) |
| Jasper-Marion County Airport, TN (APT/KAPT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot and the passenger/observer, who were both law enforcement personnel, were flying in a helicopter on a law enforcement mission when it struck a marked, 1-inch diameter, energized (161K volt) aluminum high-tension powerline cable. The high-tension powerlines were about 430 ft tall and about 3,800 ft long. A witness was driving on a nearby interstate when he observed the helicopter flying low and close to the powerlines. The witness reported that he was concerned the helicopter was going to hit the lines. He described the helicopter as hovering, and it did not appear to be in distress. The witness then saw the helicopter strike the powerlines and observed an “arc.' The helicopter spun a few times as it descended and went out of view.
The helicopter came to rest in heavily wooded and steep mountainous terrain, which resulted in substantial damage to the fuselage, main rotor, and tail rotor. A postaccident examination of the airframe and engine revealed no evidence of any preimpact mechanical malfunctions and failures that would have precluded normal operation.
Probable Cause: The pilot's failure to maintain clearance from the powerlines.
Accident investigation:
 |
|
Sources:
NTSB ERA22FA383
FAA register: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=770HP
https://flightaware.com/live/flight/N770HP/history/20220823/1909Z
Location
Images:
Photo: NTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Aug-2022 01:48 | Captain Adam | Added |
| 24-Aug-2022 02:17 | RobertMB | Updated [Total fatalities, Other fatalities, Source, Embed code, Narrative] |
| 24-Aug-2022 06:27 | nhofmann54 | Updated [Time, Aircraft type, Registration, Cn, Source, Damage, Narrative] |
| 24-Aug-2022 12:53 | johnwg | Updated [Time, Phase, Nature, Source, Narrative, Category] |
| 24-Aug-2022 14:43 | AgOps | Updated [Operator, Source, Narrative] |
| 10-Sep-2022 04:01 | Captain Adam | Updated [Time, Operator, Departure airport, Destination airport, Source, Narrative] |
| 01-Feb-2024 12:58 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Nature, Destination airport, Source, Damage, Narrative, Accident report] |
| 01-Feb-2024 13:01 | harro | Updated [Other fatalities, Source, Embed code, Narrative] |
| 01-Feb-2024 13:03 | harro | Updated [Other fatalities, Photo] |
Corrections or additions? ... Edit this accident description
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