ASN Wikibase Occurrence # 289667
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| Date: | Monday 21 October 2013 |
| Time: | 07:00 LT |
| Type: |  Cessna 172 - M |
| Owner/operator: | Private |
| Registration: | N80257 |
| MSN: | 17266482 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 3009 hours |
| Engine model: | Lycoming O-320 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Hardin, Montana -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | BROADUS, MT (00F) |
| Billings-Logan International Airport, MT (BIL/KBIL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, during cruise flight, the engine began running roughly. He began troubleshooting the problem and turned on the carburetor heat but only for a few seconds. The pilot's attempts to restore full engine power were unsuccessful, so he chose to initiate an emergency landing to a field. During the landing flare, the airplane encountered a wind gust, which pitched the airplane's nose down. The nose gear dug into the soil, and the airplane nosed over.
A postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. Weather conditions in the area at the time of the accident were conducive to the formation of carburetor icing at cruise power. It is likely that the pilot did not apply carburetor heat long enough to prevent the accumulation of carburetor icing, which caused the engine to run roughly and lose partial power.
Probable Cause: A rough-running engine and partial loss of power, which resulted from the pilot's failure to use carburetor heat appropriately while operating in an area conducive to carburetor icing.
Accident investigation:
 |
|
Sources:
NTSB WPR14LA023
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 16:49 | ASN Update Bot | Added |
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