ASN Wikibase Occurrence # 287306
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| Date: | Thursday 18 October 2012 |
| Time: | 13:40 LT |
| Type: |  SkyStar Kitfox Series 7 Super Sport |
| Owner/operator: | Charles W D'autremont |
| Registration: | N960WM |
| MSN: | KA09088156 |
| Total airframe hrs: | 71 hours |
| Engine model: | Rotax 912UL |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Twin Bridges, Montana -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Twin Bridges, MT (K7S1) |
| Twin Bridges, MT (K7S1) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot attempted to perform a full-flap soft-field takeoff in the experimental light sport airplane. The pilot had flown about 16 hours in the accident airplane in the 4 months since he purchased it from the airplane builder; however, this was his first attempt at full-flap soft-field takeoff in this airplane. As the airplane left the ground, it rolled abruptly to the right. The right wing tip struck the ground, and the airplane cartwheeled, coming to rest pointing in the opposite direction of intended travel. The right wing and fuselage were substantially damaged.
Postaccident examination revealed that the airplane's flaperons were misrigged and that the resultant difference in flaperon deflection was more extreme in the full flap position. In the full flap position with a full left control deflection input, the right flaperon moved 3 degrees more and the left flaperon 3 degrees less than they would have if properly rigged. The asymmetric nature of the flaperon deflections induced an adverse yaw to the right despite the pilot's corrective control inputs. Examination of the airplane maintenance logbook revealed that the airplane builder performed the most recent annual airworthiness inspection 4 1/2 months before the accident.
Probable Cause: The airplane builder's failure to rig the flight controls correctly, which resulted in a loss of control after takeoff.
Accident investigation:
 |
|
Sources:
NTSB WPR13CA018
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 09:33 | ASN Update Bot | Added |
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