ASN Wikibase Occurrence # 134862
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| Date: | Monday 7 June 2004 |
| Time: | 13:02 |
| Type: | Betchan KR II |
| Owner/operator: | Private |
| Registration: | N250KB |
| MSN: | D-002 |
| Engine model: | Volkswagen 1834 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Rapid City, SD -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Rapid City, SD (RAP) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The amateur-built airplane was destroyed by an in-flight collision with terrain during a forced landing following a loss of engine power. The pilot reported that the takeoff was routine through 300-400 feet above ground level (agl) when the engine lost and then regained power. He was attempting to return to the airport when the engine lost power again. He reportedly turned to the left in order to avoid some hills in front of the aircraft. He maneuvered the aircraft again to avoid power lines "only to stall-slide into the terrain." The aircraft impacted the side of a small hill less than one-quarter mile west of the airport. A post-accident examination revealed that the left valve cover and rocker arms had separated from the engine. The valve cover and three of the four rocker arms were present in the vicinity of the engine. The fourth rocker arm was not located. The left side valve push rods had also separated from the engine and were located in the debris. The valve cover was dented in a manner consistent with impacts to the internal side of the cover.
Probable Cause: Failure of the engine rocker arm installation resulting in a loss of engine power. A contributing factor was the power lines.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040609X00774&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 18:06 | ASN Update Bot | Updated [Other fatalities, Departure airport, Source, Narrative, Plane category] |
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