ASN Wikibase Occurrence # 287200
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| Date: | Sunday 18 January 2009 |
| Time: | 09:45 LT |
| Type: | Siemer James H EARTHSTAR |
| Owner/operator: | |
| Registration: | N532JS |
| MSN: | 010107 |
| Total airframe hrs: | 245 hours |
| Engine model: | Hirth 3203 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Santa Ynez, California -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Santa Ynez Airport, CA (SQA/KIZA) |
| Santa Paula, CA (KSZP) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
According to the sport pilot, during cruise flight in his experimental light sport airplane he noted that the two-cylinder engine's cylinder head and exhaust gas temperature gauges decreased in temperature. Thereafter, the number 1 cylinder (rear) stopped producing power, and engine power was partially lost. The pilot made a forced landing on upsloping, rough terrain. During landing, the airplane's forward fuselage buckled. The pilot said that examination of the engine revealed that the spark plug had come out of the engine's rear cylinder head. The pilot had changed the spark plugs about 2.5 hours prior to the mishap.
Probable Cause: A partial loss of engine power due to the rear cylinder's spark plug coming out of the cylinder head.
Accident investigation:
 |
|
Sources:
NTSB WPR09CA091
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 08:18 | ASN Update Bot | Added |
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