ASN Wikibase Occurrence # 208145
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| Date: | Friday 17 June 2016 |
| Time: | 20:40 |
| Type: | Nieuport 11 |
| Owner/operator: | Private |
| Registration: | N124TG |
| MSN: | 63 |
| Year of manufacture: | 1985 |
| Total airframe hrs: | 579 hours |
| Engine model: | Volkswagon |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gardner, KS -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Gardner, KS (K34) |
| Gardner, KS (K34) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot stated that a preflight inspection of his experimental, amateur-built airplane revealed no discrepancies. After takeoff, the pilot completed two circuits around the airport traffic pattern with “no problems.” During the upwind leg of the third circuit, he “noticed some vibration” and saw that the horizontal stabilizer was shaking/vibrating. The pilot began an approach for a precautionary landing, but during the base-to-final turn of the approach, the airplane experienced an aerodynamic stall.
The pilot stated that he did not lose elevator control authority during the last legs of the flight but that he was "distracted" by a fear that parts may be separating from the airplane. The airplane, which was built from plans based upon a 100-year old design, was not equipped with a stall warning system. The pilot further reported that the flight control vibration was likely the result of the control cable that linked the two elevators in a “Y” configuration. He stated that the single control cable was not supported for “a number of feet” through guides/fairleads, which can make the elevators “flutter.”
Probable Cause: The pilot's diverted attention during the approach for the precautionary landing, which resulted in low airspeed, an exceedance of the airplane’s critical angle of attack, and a subsequent aerodynamic stall. Contributing to the accident was the control system vibration and the airplane’s lack of a stall warning system.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2018 18:41 | ASN Update Bot | Added |
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