ASN Wikibase Occurrence # 263518
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| Date: | Saturday 29 May 2021 |
| Time: | 12:12 LT |
| Type: |  Cessna 182K Skylane |
| Owner/operator: | Dataworks Of New York Inc |
| Registration: | N2761Q |
| MSN: | 18257961 |
| Year of manufacture: | 1967 |
| Total airframe hrs: | 2938 hours |
| Engine model: | Continental O-470 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Yakutat, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Talkeetna, AK |
| Yakutat, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, before departure, he reviewed weather conditions and proposed destination locations, which included winds aloft and METARs. About 2 hours and 15 minutes into the flight, at an altitude of about 12,500 mean sea level (msl), the airplane encountered severe turbulence and windshear, and, shortly thereafter, a downdraft. Unable to escape the downdraft, the pilot attempted to level the wings and pitched up. The airplane impacted mountainous terrain, resulting in substantial damage to the fuselage, wings, left horizontal stabilizer, and elevator. The pilot reported no preaccident mechanical failures or malfunctions that would have precluded normal operation.
Review of weather information revealed a relatively strong pressure gradient in the area. Upper air soundings indicated favorable conditions for severe mountain wave conditions with updraft and downdraft speeds between 2,000 and 3,000 ft per minute. Based on the available information, it is likely that the flight encountered mountain wave conditions, including severe turbulence, windshear, and downdrafts greater than 2,000 ft per minute, which exceeded the climb capability of the airplane and resulted in descent into terrain.
Probable Cause: An encounter with mountain wave turbulence and windshear that exceeded the climb capability of the airplane and resulted in impact with terrain.
Accident investigation:
 |
|
Sources:
NTSB ANC21LA043
FAA register: https://registry.faa.gov/aircraftinquiry/Search/NNumberResult
https://flightaware.com/live/flight/N2761Q/history/20210529/1855Z/PATK/L%2060.70000%20-143.51666
https://flightaware.com/photos/view/1104930-15e6ba1caea088a657406940a4aab06b9652603d/aircrafttype/C182
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Jun-2021 22:03 | Geno | Added |
| 02-Jun-2021 05:41 | Anon. | Updated [Location, Departure airport, Destination airport, Source, Damage, Narrative] |
| 03-Jun-2021 15:10 | Captain Adam | Updated [Location, Source, Narrative] |
| 07-Jun-2021 07:11 | aaronwk | Updated [Source, Damage, Narrative] |
| 13-Aug-2022 14:48 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Damage, Narrative, Category, Accident report] |
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