ASN Wikibase Occurrence # 150552
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| Date: | Tuesday 6 November 2012 |
| Time: | 11:00 |
| Type: |  Cessna 172M Skyhawk |
| Owner/operator: | Private |
| Registration: | N21391 |
| MSN: | 17263943 |
| Year of manufacture: | 1974 |
| Total airframe hrs: | 3240 hours |
| Engine model: | Lycoming O-320 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Southeast corner of Almond and Elm avenues in Patterson, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Survey |
| Departure airport: | Modesto, CA (KMOD) |
| Modesto, CA (KMOD) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a photography mission, the pilot applied full engine power, and the engine speed dropped to idle. After attempting a series of troubleshooting steps, the engine did not respond, and the pilot performed a forced landing into a field. The airplane landed hard and nosed over. Postaccident examination of the engine revealed that the outer jacket of the throttle control cable had fragmented at the carburetor attach point, exposing the inner cable. Subsequent throttle control movement resulted in the cable flexing out of the jacket, rather than moving the throttle control arm at the carburetor. No life limit existed for the cable, which was most likely installed at the time of airframe manufacture, 38 years prior to the accident. Further examination of the engine revealed no additional evidence of a mechanical malfunction or failure that would have precluded normal operation.
Probable Cause: Failure of the throttle control cable during maneuvering flight, which resulted in a partial loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 06-Nov-2012 12:53 | gerard57 | Added |
| 06-Nov-2012 12:54 | gerard57 | Updated [Location] |
| 06-Nov-2012 12:55 | gerard57 | Updated [Damage] |
| 07-Nov-2012 06:29 | RobertMB | Updated [Aircraft type, Cn, Location, Departure airport, Narrative] |
| 07-Nov-2012 09:54 | Geno | Updated [Time, Nature, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 28-Nov-2017 13:54 | ASN Update Bot | Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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