NTSB CAROL · Event
Event ERA15CA012
Aircraft involved
Probable cause & findings
The glider's inadvertent encounter with low altitude wind shear.
Factual narrative
According to the pilot, there were some areas of turbulence during the glider's aero tow to 3,000 feet, but the tow was uneventful. The flight was then smooth until descent to about 1,200 feet above ground level, when conditions became "bumpy." Upon entering the traffic pattern for runway 24, the pilot increased normal approach airspeed by 10 knots in anticipation of gusty headwinds on final approach. The approach then proceeded "normally" until short final, when the glider encountered a "rogue" wind gust that "violently" rolled it about 90 degrees to the right, heading it away from runway centerline. By the time the pilot was able to level the wings, the glider was too low, necessitating an off-airport landing into small trees that resulted in left wing spar damage. Winds, recorded at a nearby airport about the time of the accident, were from 260 degrees true at 13, gusting to 19 knots. The pilot did not report any preexisting mechanical anomalies that would have precluded normal operation. According to the pilot, there were some areas of turbulence during the glider's aero tow to 3,000 feet, but the tow was uneventful. The flight was then smooth until descent to about 1,200 feet above ground level, when conditions became "bumpy." Upon entering the traffic pattern for runway 24, the pilot increased normal approach airspeed by 10 knots in anticipation of gusty headwinds on final approach. The approach then proceeded "normally" until short final, when the glider encountered a "rogue" wind gust that "violently" rolled it about 90 degrees to the right, heading it away from runway centerline. By the time the pilot was able to level the wings, the glider was too low, necessitating an off-airport landing into small trees that resulted in left wing spar damage. Winds, recorded at a nearby airport about the time of the accident, were from 260 degrees true at 13, gusting to 19 knots. The pilot did not report any preexisting mechanical anomalies that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Environmental issues-Conditions/weather/phenomena-Wind-Sudden wind shift-Effect on operation - C
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Attain/maintain not possible
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Descent/approach/glide path-Attain/maintain not possible
Verbatim from NTSB's published report. Source file
NTSB_2014_ERA15CA012.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (wind shear, turbulence). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2019 · Contractor Report (CR)
An Examination of Aviation Accidents Associated with Turbulence, Wind Shear and Thunderstorm
The focal point of the study reported here was the definition and examination of turbulence, wind shear and thunderstorm in relation to aviation accidents.
- NASA NTRS 2019 · Preprint (Draft being sent to journal)
Convectively Induced Turbulence Encountered During NASA's Fall-2000 Flight Experiments
Aircraft encounters with atmospheric turbulence are a leading cause of in-flight injuries aboard commercial airliners and cost the airlines millions of dollars each year.
- NASA NTRS 2019 · Technical Memorandum (TM)
Some aspects of wind shear in the upper atmosphere
Hydrodynamic turbulence and wind shear in upper atmosphere
- Embry-Riddle Scholarly Commons 2019 · Journal article (IJAAA)
Low Level Turbulence Detection For Airports
Abstract—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases.
- Embry-Riddle Scholarly Commons 2018 · Journal article (IJAAA)
Evaluating the Effect of Turbulence on Aircraft During Landing and Take-Off Phases
—— Low level wind shear and turbulence present a serious safety risk to aircraft during the approach, landing and take-off phases.
- arXiv 2026 · arXiv preprint
Direct Numerical Simulations of Ice-Ocean Boundary Turbulence
Turbulent heat and freshwater transport at ice-ocean interfaces controls glacier and iceberg melt rates, yet the underlying physics remains poorly constrained.
Browse the full corpus — academia portal ↗