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ASN Wikibase Occurrence # 145408
Last updated: 16 September 2021
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B JetRanger II
Owner/operator:Hawkeye Helicopter
Registration: N85RB
MSN: 831
Fatalities:Fatalities: 0 / Occupants: 3
Aircraft damage: Substantial
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.)
Departure airport:Lawrence, KS (KLWC)
Destination airport:Lawrence, KS (KLWC)
Investigating agency: NTSB
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 pilotís inadequate compensation for the wind conditions during a hover maneuver, which resulted in a loss of tail rotor effectiveness.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 months
Download report: Final report

Revision history:

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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