ASN Wikibase Occurrence # 44001
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| Date: | Friday 22 September 2006 |
| Time: | 09:58 |
| Type: |  Beechcraft B55 Baron |
| Owner/operator: | Private |
| Registration: | N4JV |
| MSN: | TC-1583 |
| Total airframe hrs: | 3292 hours |
| Engine model: | Continental IO-470-L |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | N of Sioux City, SD -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | North Platte Regional Airport-Lee Bird Field, NE (LBF/KLBF) |
| Losuia Airport (LSA/AYKA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was in cruise flight at 9,000 feet above mean sea level (msl) when it entered a descending left turn. The altitude data went into coast mode with the groundspeed being reported as 204 knots. Four seconds later, radar data shows the airplane turning to the right with a ground speed of 50 knots at an altitude of 7,400 feet. The airplane then enters another descending left turn. Radar data then shows the airplane at 5,200 feet with a ground speed of 29 knots. The altitude data then once again entered the coast mode. Witnesses reported seeing the airplane spinning as it descended out of the clouds. The airplane impacted the terrain in a relatively flat attitude. Post accident examination of the airframe, engines, and associated systems and components failed to reveal any preimpact failure/malfunction. Weather conditions at the time of the accident consisted of instrument meteorological conditions with rain. A weather study showed the airplane was operating in an area of instrument meteorological conditions with rain showers, and turbulence.
Probable Cause: The pilot's failure to maintain control of the airplane during cruise flight, and subsequent inadvertent flat spin from which he could not recover. Contributing to the accident were clouds, turbulence, and rain showers.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20060927X01409&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 05-Dec-2017 09:23 | ASN Update Bot | Updated [Other fatalities, Departure airport, Source, Narrative] |
| 08-Jun-2023 08:21 | Ron Averes | Updated [[Other fatalities, Departure airport, Source, Narrative]] |
Corrections or additions? ... Edit this accident description
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