ASN Wikibase Occurrence # 187958
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| Date: | Tuesday 7 June 2016 |
| Time: | 10:20 |
| Type: |  Denney Kitfox 4 |
| Owner/operator: | Private |
| Registration: | N921RP |
| MSN: | 1589 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 442 hours |
| Engine model: | Rotax 582LC |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lake Thompson, Kingsbury County, South Dakota -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | De Smet, SD (Y34) |
| De Smet, SD (Y34) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a personal local flight, the private pilot and passenger, who held a student pilot certificate, were searching a lake for a submerged boat. The passenger stated that while maneuvering at a low altitude, the pilot banked the airplane about 45 to 60 degrees at an airspeed of about 50 miles per hour. During the turn, the airplane stalled, entered a spin, and impacted the water. A postaccident examination of the airframe and engine did not reveal any evidence of a mechanical malfunction or failure that would have precluded normal operation. Data from a GPS unit recovered from the airplane indicated that the airplane was about 250 ft above ground level at a ground speed of about 34 knots when it stalled. Based on the passenger's statements and the GPS data, it is likely that the pilot failed to maintain adequate airspeed and exceeded the airplane's critical angle-of-attack while maneuvering, which resulted in an aerodynamic stall/spin from which he had insufficient altitude to recover.
Probable Cause: The pilot's failure to maintain adequate airspeed and his exceedance of the airplane's critical angle-of-attack during a steep turn at a low altitude, which resulted in an aerodynamic stall/spin at too low of an altitude to recover.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=921RP
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Jun-2016 19:06 | gerard57 | Added |
| 08-Jun-2016 01:50 | Geno | Updated [Total fatalities, Total occupants, Other fatalities, Location, Source, Narrative] |
| 08-Jun-2016 04:55 | Geno | Updated [Aircraft type, Registration, Cn, Source, Damage, Narrative] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Apr-2017 06:36 | PiperOnslaught | Updated [Time, Departure airport, Destination airport, Source, Narrative] |
| 19-Aug-2017 14:52 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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