GAA17CA379
2017-07-02 · Rio Vista, California, United States · None · 1 aircraft · Status: Completed
Airport O88
N321MW has since been reassigned. It is now registered to a different aircraft (PILATUS PC-12/45, built 2001), which was not involved in this event.
Aircraft involved
Probable cause & findings
The student pilot’s failure to maintain directional control during a go-around in gusting wind conditions.
Factual narrative
The student pilot reported that, during his second low approach, the airplane was stable at 75 knots and full flaps, about 20 ft. above the ground. He added, that about 5 to 10 ft. above the ground, he applied full power and began to "slowly" retract the flaps. Encountering what he described as "wind shear," he reported that, the airplane became "vertical" and he lost directional control. He added that, he immediately banked to the right and applied full right rudder, subsequently, the airplane's left wing struck the ground. The airplane came to rest off the right side of the runway. The airplane sustained substantial damage to the left wing. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The student pilot reported checking the airport's automated weather observation system (AWOS), which was reporting wind from 120° at 12 knots, prior to the approach. He further reported the sky condition as clear, temperature 84°F, dewpoint 53°F, and wind gusts to 20 knots. The pilot selected runway 15. As a recommendation, the student pilot reported that he should have avoided areas with gusts greater than 10 knots. The student pilot reported that, during his second low approach, the airplane was stable at 75 knots and full flaps and about 20 ft above ground level (agl). He added, that about 5 to 10 ft agl, he applied full power and began to "slowly" retract the flaps. Encountering what he described as "wind shear," he reported that the airplane became "vertical" and that he lost directional control. He added that he immediately banked to the right and applied full right rudder. Subsequently, the airplane's left wing struck the ground. The airplane came to rest off the right side of the runway. The airplane sustained substantial damage to the left wing. The student pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The student pilot reported checking the airport's automated weather observation system, which was reporting wind from 120° at 12 knots, before the approach. He further reported the sky condition as clear, temperature 84°F, dewpoint 53°F, and wind gusts to 20 knots. The pilot selected runway 15. As a recommendation, the student pilot reported that he should have avoided areas with gusts greater than 10 knots. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot - C
- — Environmental issues-Conditions/weather/phenomena-Wind-Gusts-Effect on operation
Verbatim from NTSB's published report. Source file
NTSB_2017_GAA17CA379.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (wind shear, go-around). All research papers
- NASA NTRS 2025 · Conference Paper A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- Flight Safety Foundation 2024 · FSF / AeroSafety World Go-Around Safety Forum Findings
Foundation Go-Around Safety Forum technical findings — examines why pilots fail to execute go-arounds when criteria are met (stabilized approach gate not met, energy state out of envelope, traffic con…
- Semantic Scholar 2022 · Article (Journal of Safety Research) Go-around accidents and general aviation safety.
INTRODUCTION Changes in General Aviation (GA) accident rates, specifically in the go-around phase, are examined by comparing the number of accidents, the proportion of fatal accidents, and the proport…
- Semantic Scholar 2021 · Article (Aerospace) Classification and Analysis of Go-Arounds in Commercial Aviation Using ADS-B Data
Go-arounds are a necessary aspect of commercial aviation and are conducted after a landing attempt has been aborted. It is necessary to conduct go-arounds in the safest possible manner, as go-arounds …
- NASA NTRS 2021 · Accepted Manuscript (Version with final changes) Go-Around Criteria Refinement for Transport Category Aircraft
Presently, airline pilots are trained to go around if, when lower than 500 ft above the ground, they are outside of a handful of parameters such as airspeed, position, and rate of descent.
- NASA NTRS 2019 · Conference Paper Validation of Proposed Go-Around Criteria Under Various Environmental Conditions
This paper evaluates the effects of environmental conditions on touchdown performance under varying approach states and validates proposed go-around criteria developed using data from a previously con…