ASN Wikibase Occurrence # 239253
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| Date: | Friday 7 August 2020 |
| Time: | 12:30 LT |
| Type: | Sportine Aviacija Lak-17B |
| Owner/operator: | Private |
| Registration: | N290MH |
| MSN: | 029 |
| Year of manufacture: | 2020 |
| Engine model: | Sportine Aviacija FES-LAK-M100 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | North of Lampson Field Airport (1O2), Lakeport, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Lakeport, CA (1O2) |
| Lakeport, CA (1O2) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot departed on a local flight in his newly purchased self-launching motorglider in day visual meteorological conditions. Flight track data showed the glider complete multiple turns in the vicinity of the airport at various altitudes. About 20 minutes into the flight, flight track data ended near the accident site. The end of the data showed the glider in a short, steep climb before turning left and losing about 70 ft of altitude. The final data point showed the glider about 564 ft above ground level. There were no witnesses to the accident. Although the recorded data did not capture engine operation for the accident flight, examination of the wreckage indicated that the engine was operating at the time of impact.
The pilot had over 1,600 hours of flight experience in gliders and about 4.5 hours in the accident glider. Although the flight track data did not show an aerodynamic stall causing the glider to descend to the ground, it is likely that one occurred. According to photos supplied by first responders, the glider was found in multiple sections scattered within about a 100 ft radius. In the immediate vicinity of the debris field and wreckage, trees and bushes were not damaged indicating that the glider was most likely in a nose low descent at the time of impact.
Probable Cause: The pilot's exceedance of the glider's critical angle of attack during flight, which resulted in an aerodynamic stall and subsequent impact with terrain.
Accident investigation:
 |
|
Sources:
NTSB WPR20LA257
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=290MH
Location
Media:
NTSB investigating the Aug. 7, 2020, crash of a Avia Sportine glider in Lakeport, CA. NTSB is not traveling to the scene of the crash at this time.
— NTSB_Newsroom (@NTSB_Newsroom) August 8, 2020
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 08-Aug-2020 19:13 | Captain Adam | Added |
| 08-Aug-2020 19:40 | RobertMB | Updated [Aircraft type, Registration, Cn, Operator, Source, Embed code] |
| 08-Aug-2020 21:35 | Geno | Updated [Time, Location, Phase, Departure airport, Source] |
| 26-Aug-2020 09:20 | ASN Update Bot | Updated [Time, Aircraft type, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 26-Aug-2020 09:22 | harro | Updated [Aircraft type, Source] |
Corrections or additions? ... Edit this accident description
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