ASN Wikibase Occurrence # 145408
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| Date: | Wednesday 2 May 2012 |
| Time: | 09:20 |
| Type: |  Bell 206B JetRanger II |
| Owner/operator: | Hawkeye Helicopter |
| Registration: | N85RB |
| MSN: | 831 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 17038 hours |
| Engine model: | Rolls Royce 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | NW of Kansas state highways K-4 and K-16 junction, Valley Falls, KS -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | Lawrence, KS (KLWC) |
| Lawrence, KS (KLWC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter, with the pilot and two passengers aboard, was hovering about 100 to 150 feet above ground level with a quartering tailwind. As the pilot turned the helicopter to the right, the helicopter started to spin, as reported by the pilot and several witnesses. He applied full left pedal and left forward cyclic, and slightly reduced power to stop the rotation. The pilot added that he sensed the loss of tail rotor effectiveness (LTE) and continued with the control inputs to fly out of the LTE. The pilot was unable to regain control of the helicopter before it impacted the ground. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation. Based on the flight conditions at the time, the accident sequence is consistent with the helicopter encountering a LTE event.
Probable Cause: The pilot’s inadequate compensation for the wind conditions during a hover maneuver, which resulted in a loss of tail rotor effectiveness.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 11 June 2023 | N85RB | Private | 0 | SW of Pratt Regional Airport (PTT/KPTT), Pratt, KS | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-May-2012 16:48 | Geno | Added |
| 08-May-2012 23:26 | Geno | Updated [Source] |
| 31-Aug-2014 18:11 | Aerossurance | Updated [Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:41 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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