ASN Wikibase Occurrence # 243714
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| Date: | Tuesday 6 October 2020 |
| Time: | 15:33 |
| Type: |  Rans S-7 Courier |
| Owner/operator: | Private |
| Registration: | N55893 |
| MSN: | 0207459 |
| Year of manufacture: | 2008 |
| Engine model: | Rotax 912 |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Treeport Airport (ID22), Spirit Lake, ID -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Treeport Airport, ID (ID22) |
| Timber Basin Airpark, ID (ID24) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On October 06, 2020, at 1533 Pacific daylight time, a Rans S-7 Courier amphibious airplane, N55893, was substantially damaged when it was involved in an accident near Spirit Lake, Idaho. The pilot sustained fatal injuries and the passenger sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.
The pilot and pilot-rated passenger were departing from a grass runway. The passenger stated that the airplane remained in ground effect for a large duration of the takeoff and then climbed above the treeline. At an altitude of about 75 ft above ground level, the airplane’s left wing stalled, and the airplane collided with terrain.
Analysis of video of the accident takeoff and GPS data indicated that the airplane’s wing reached its critical angle of attack before it began to lose altitude and descend into terrain. Sound spectrum analysis of the engine indicated that it was producing power at the time of the accident. Given the weights of the pilot, passenger, and fuel onboard, the airplane was under its maximum gross weight and within its center-of-gravity limits at the time of the accident. The circumstances of the accident are consistent with the pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall and loss of control.
Probable Cause: The pilot’s exceedance of the airplane's critical angle of attack during the initial climb after takeoff, which resulted in an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB
FAA
https://www.facebook.com/NorthIdahoNews/posts/779426042847484
https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N55893
https://abpic.co.uk/pictures/view/1251645
Location
Images:
Photos: NTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Oct-2020 19:02 | Geno | Added |
| 07-Oct-2020 19:04 | Geno | Updated [Aircraft type] |
| 04-Jan-2021 23:52 | Captain Adam | Updated [Time, Total fatalities, Departure airport, Destination airport, Damage, Narrative] |
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