GAA17CA004

NTSB accident investigation · Airborne Windsports PTY Edge XT 912 L · Fort Valley, GA · October 2, 2016

Accident · Serious injuriesData collectionFinal report
Date
October 2, 2016, 18:30 local (22:30 UTC)
Place
Fort Valley, GA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N53AWAirborne Windsports PTY Edge XT 912 L
Defining event
Approach-VFR pattern final: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report August 3, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
Case key
94144

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The failure of the aircraft’s right overcenter washout strut split ring, which resulted in the pilot’s inability to maintain lateral control of the aircraft and subsequent ground impact.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the flight instructor in the weight-shift-control aircraft, he made two low approaches and two go-arounds to runway 36. He reported that, during the third approach, he crossed the runway threshold and "rounded up" and that the left wing "flew up, and the right wing dropped precipitously, as if it stalled." The aircraft swiftly yawed to the right and descended rapidly, and the pilot stated that he responded with a full control deflection. He added that the deflection leveled the aircraft just before impact with the turf and that the aircraft heading was about 35° to 50° right of the runway heading. The aircraft sustained substantial damage to both wings and the airframe. A Federal Aviation Administration (FAA) Aviation Safety Inspector examined the aircraft wreckage and was unable to locate the right overcenter washout strut spilt ring. The split ring connects the washout strut and the leading edge of the right wing spar, which allows the pilot to manipulate the aircraft's directional control. In postimpact photographs of the left side overcenter washout strut split ring, it appears to be partially attached, and the right side split ring was not located in the wreckage.

Factual narrative

According to the flight instructor in the weight shift control aircraft, he made two low approaches and two go-arounds to runway 36. He reported that during the third approach, he crossed the runway threshold, "rounded up" and the left wing "flew up, and the right wing dropped precipitously, as if it stalled." The aircraft swiftly yawed to the right, descended rapidly and the pilot avowed that he responded with a full control deflection. He added that the deflection leveled the aircraft just before impact with the turf, and the aircraft heading was about 35° to 50??° right of the runway heading. The aircraft sustained substantial damage to both wings and the airframe. A Federal Aviation Administration (FAA), Aviation Safety Inspector examined the aircraft wreckage and was unable to locate the right side over-center washout strut spilt ring. The split ring connects the washout strut and the leading edge of the right wing spar, which allows the pilot to manipulate the aircraft's directional control. Post-impact photographs of the left side over-center washout strut split ring appears to be partially attached, and the right side split ring was not located in the wreckage.

Aircraft

Registration
N53AW
Reported as
Airborne Windsports PTY Edge XT 912 L (NO SERIES)
Category
Weight-shift
Serial number
XT-912-0182
Built
2008
Airframe hours
913
Engine
Rotax 912UL, 80 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · April 15, 2016
Departed
GA81 · Fort Valley, GA
Destination
GA81 · Fort Valley, GA
Airport
GA81 · Cameron Field, runway 36, 3,000 × 100 ft, grass/turf
Equipment
Handheld GPS, Electronic flight bag or handheld device, Electronic multifunction display

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
74
Injuries
Serious
Certificates
Private, Flight instructor, Sport Pilot
Airplane ratings
Single-engine land, Multi-engine land
Medical
Sport pilot
Seat
Front
Restraint
Lap only
Flight hours
3,849 total · 1,212 in this make and model · 3,244.1 as pilot in command · 13.6 in the last 90 days · 3.4 in the last 30 days · 0.2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 48 °F
Altimeter
29.97 inHg
Observed at
KMCN, 12 nm away

Docket · 3

The files NTSB released with the investigation on July 5, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.