ASN Wikibase Occurrence # 122762
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| Date: | Thursday 26 May 2011 |
| Time: | 14:23 |
| Type: |  Bell 206L-1 LongRanger II |
| Owner/operator: | Lifeteam |
| Registration: | N1815 |
| MSN: | 45299 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 25443 hours |
| Engine model: | Allison 250 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Near Newton, KS -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Newton, KS (EWO) |
| Newton, KS (EWO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 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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