NTSB CAROL · Event
Event ERA23LA353
Aircraft involved
Probable cause & findings
The pilot’s inadvertent encounter with helicopter wake turbulence during initial climb, which resulted in a loss of airplane control.
Factual narrative
The pilot stated that, before departing in his tailwheel-equipped airplane, a U.S. Army CH-47 heavy-lift helicopter departed and proceeded upwind. When the helicopter was established on the downwind leg of the traffic pattern, the pilot initiated his takeoff. At 40 ft above ground level in the initial climb, the airplane “hit the helicopter’s rotor wash” which rolled the airplane “about 135 degrees to its right.” The pilot was able to level the wings before the airplane touched down in low brush to the right of the runway and came to rest near the airport boundary fence. The airplane sustained substantial damage to the main landing gear support structure and the pilot deplaned uninjured. The pilot reported there were no mechanical malfunctions or anomalies with the airplane 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).
- — Environmental issues-Conditions/weather/phenomena-Turbulence-Wake turbulence-Contributed to outcome
- — Personnel issues-Action/decision-Info processing/decision-Identification/recognition-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2023_ERA23LA353.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 (wake turbulence, 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 · Conference Paper
Aircraft wake turbulence minimization by aerodynamic means
The paper reviews NASA's efforts on wake vortex turbulence minimization by aerodynamic design or retrofit modifications to large transport aircraft.
- NASA NTRS 2019 · Conference Paper
Wake Turbulence Mitigation for Arrivals (WTMA)
The preliminary Wake Turbulence Mitigation for Arrivals (WTMA) concept of operations is described in this paper. The WTMA concept provides further detail to work initiated by the Wake Vortex Avoidance…
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence avoidance
Aircraft wake turbulence /trailing vortex systems/ avoidance during flight, describing procedures for pilots and tower operators
- NASA NTRS 2019 · Conference Paper
Aircraft wake turbulence progress and plans
Aircraft wake turbulence and trailing vortices, investigating physical characteristics, hazard potential and avoidance techniques
- SKYbrary (Eurocontrol) 2023 · SKYbrary article
Wake Vortex Turbulence — SKYbrary Knowledge Base
SKYbrary wake vortex turbulence comprehensive article — generation mechanics, dissipation factors, separation standards (ICAO LIGHT/MEDIUM/HEAVY/SUPER + recategorisation RECAT-EU).
- 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.
Browse the full corpus — academia portal ↗