ASN Wikibase Occurrence # 278793
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| Date: | Tuesday 22 September 2020 |
| Time: | 19:00 LT |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N4380B |
| MSN: | 26724 |
| Year of manufacture: | 1955 |
| Total airframe hrs: | 3295 hours |
| Engine model: | Franklin PZL 6A-350-C2 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Big Lake, Alaska -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Anchorage , AK (MRL) |
| Big Lake, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a landing to a remote off-airport gravel bar located along a river, while at about 20 ft above ground level, the airplane's engine lost power. The engine then surged briefly before a total loss of engine power occurred. Subsequently, the airplane landed short of the gravel bar in the river and the airplane nosed over. The airplane sustained substantial damage to the left wing and empennage.
A postaccident examination revealed no mechanical failures or malfunctions. A postaccident engine run was successfully performed. A non-aviation fuel tank was installed on the top of the fuselage to provide a fuel source. Air was applied to the fuel lines to provide pressure to ensure proper fuel flow, no contaminates were noted in the fuel lines.
The temperature and dew point were entered into a carburetor icing probability chart, which coincided with the 'serious icing in glide power†category.
Probable Cause: The pilot's failure to utilize carburetor heat while flying in conditions conducive to carburetor icing, which resulted in a total loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB ANC20LA099
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Jun-2022 06:57 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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