ASN Wikibase Occurrence # 183098
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| Date: | Saturday 2 January 2016 |
| Time: | 14:30 |
| Type: |  Velocity STD RG |
| Owner/operator: | Private |
| Registration: | N133SV |
| MSN: | SFE-012 |
| Year of manufacture: | 2014 |
| Total airframe hrs: | 66 hours |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Kern County, Rosamond, CA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Rosamond, CA (L00) |
| Rosamond, CA (L00) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Shortly after departure on the local flight, the private pilot observed that the engine temperature was higher than it had been on the previous day's flight. After reducing power, the engine began to surge, which prompted the pilot to return to the airport. Unable to maintain altitude, the pilot elected to land in a vacant field. The left wing sustained substantial damage during the landing. A postaccident examination of the engine revealed that the No. 1 connecting rod assembly had failed. Although the reason for the failure could not be determined, the fracture surfaces exhibited signatures of fatigue consistent with a malfunction of the connecting rod bearing, such as improper bearing size, rotation of the bearing during service, or operation of a severely worn bearing. Such conditions would result in higher-than-normal operating stress, and likely contributed to the propogation of the fatigue cracking.
Probable Cause: A partial loss of engine power due to failure of the No. 1 connecting rod as a result of multiple fatigue cracks for reasons that could not be determined during on postaccident examination.
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N133SV
Accident investigation:
 |
|
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Jan-2016 02:27 | Geno | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 19-Aug-2017 13:54 | ASN Update Bot | Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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