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ASN Wikibase Occurrence # 122762
Last updated: 15 September 2021
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Type:Silhouette image of generic B06 model; specific model in this crash may look slightly different
Bell 206L-1 LongRanger II
Registration: N1815
MSN: 45299
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Near Newton, KS -   United States of America
Phase: En route
Departure airport:Newton, KS (EWO)
Destination airport:Newton, KS (EWO)
Investigating agency: NTSB
The pilot and flight mechanic were on a maintenance flight and had entered an autorotation to check the flat-pitch rotor speed, which was satisfactory. During recovery, about 500 feet above ground level, the pilot applied the throttle but the engine did not respond. The autorotational descent continued and the pilot executed a power-off running landing to a wheat field. As the helicopter touched down, a main rotor blade struck the tail boom, separating the tail boom at its attach point. Both main rotor blades impacted terrain and the helicopter came to rest on its right side. The pilot and flight mechanic were uncertain as to whether the engine had stopped running during the autorotation recovery or whether it was only operating at idle rpm. No preimpact anomalies were discovered that would have prevented normal operation. The engine was removed and run in a test cell, and the engine met specification power. The reason for the loss of engine power could not be determined.
Probable Cause: A loss of engine power for undetermined reasons because postaccident examination of the airframe and engine revealed no anomalies.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 8 months
Download report: Final report

Revision history:

27-May-2011 01:54 gerard57 Added
27-May-2011 03:28 RobertMB Updated [Time, Aircraft type, Location, Nature, Source, Damage, Narrative]
27-May-2011 07:55 RobertMB Updated [Aircraft type, Registration, Cn, Operator, Source]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 16:53 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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