ASN Wikibase Occurrence # 195060
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| Date: | Thursday 27 April 2017 |
| Time: | 13:30 |
| Type: |  Robinson R44 Raven II |
| Owner/operator: | Chesapeake Bay Helicopters |
| Registration: | N728CB |
| MSN: | 12899 |
| Year of manufacture: | 2010 |
| Total airframe hrs: | 1917 hours |
| Engine model: | Lycoming IO-540-AE1A5 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Catawba County, Newton, NC -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | Concord, NC (JQF) |
| Concord, NC (JQF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial helicopter pilot and a crewmember were conducting a pipeline patrol when they noticed a right-of-way infraction (construction work) that they wanted to photograph. The pilot then entered a left circuit at 500 ft above ground level. The pilot reported that he subsequently felt a shudder in the controls and that the helicopter began to yaw right and spin. Although the pilot reported that he maintained an airspeed of 70 knots while maneuvering, GPS data revealed that the loss of yaw control occurred at the completion of the first left circuit and the beginning of the second left circuit as the helicopter slowed to a groundspeed of about 1 mph. Weather data indicated that, at this point, the helicopter was experiencing an 8-knot tailwind. The pilot lowered the helicopter’s nose but was unable to correct the spin. He entered an autorotation and maneuvered to avoid residences and utility poles, and the helicopter then impacted the ground.
Examination of the helicopter did not reveal any evidence of preimpact mechanical malfunctions that would have precluded normal operation. It is likely that the low-airspeed condition combined with a tailwind during out-of-ground-effect maneuvering resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.
Probable Cause: The pilot's failure to maintain an adequate airspeed during out-of-ground-effect maneuvering at a low airspeed with a tailwind, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=728cb
https://flightaware.com/photos/view/896158-6ad9703dc1aa0ec43fba5df120b17e69515ff741/aircraft/N728CB/sort/votes/page/1
Location
Images:
Photo: FAA
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Apr-2017 19:36 | gerard57 | Added |
| 27-Apr-2017 23:33 | Geno | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Phase, Nature, Source, Damage, Narrative] |
| 28-Apr-2017 06:24 | Anon. | Updated [Damage] |
| 28-Apr-2017 17:32 | Aerossurance | Updated [Narrative] |
| 11-May-2017 16:52 | Aerossurance | Updated [Time, Departure airport, Source, Narrative] |
| 08-Mar-2018 11:24 | ASN Update Bot | Updated [Time, Operator, Departure airport, Destination airport, Source, Damage, Narrative] |
| 08-Mar-2018 11:27 | harro | Updated [Source, Narrative, Photo, ] |
Corrections or additions? ... Edit this accident description
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