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ASN Wikibase Occurrence # 177710
Last updated: 24 August 2020
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206B
Registration: N206AF
C/n / msn: 2473
Fatalities:Fatalities: 0 / Occupants: 5
Other fatalities:0
Aircraft damage: Substantial
Location:Auburn, WA -   United States of America
Phase: Landing
Departure airport:Bow, WA
Destination airport:Enumclaw, WA
Investigating agency: NTSB
The pilot reported that while in cruise flight at about 900 to 1,000 feet above ground level, 95 knots, and 80% torque, without warning, the helicopter suddenly lost altitude and yawed violently to the left and rapidly rolled (pilot unsure as to which direction). The pilot initiated an autorotation to a field, maneuvering to avoid trees. The pilot stated that during the flare, he pulled in collective, and the helicopter yawed, so he "rolled off the throttle." The helicopter touched down with almost no forward speed, the right landing skid collapsed and rolled over onto its right side. The pilot stated that he did not recall hearing the engine out beeper or the low rotor RPM horn and he did not note the engine or rotor RPM indications during the descent. Post accident inspection of the airframe and subsequent inspection and teardown of the engine and associated components did not find evidence of a mechanical failure or malfunction.

Probable Cause: Loss of control for undetermined reasons.



Revision history:

11-Jul-2015 13:38 Noro Added
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 17:58 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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