GAA18CA367
2018-06-14 · Wasilla, Alaska, United States · None · 1 aircraft · Status: Completed
Airport 0AK1
Current FAA registration · N3764Z
- Make / Model
- PIPER PA-18-150
- Year of manufacture
- 1960 · 58 years old at event
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19690311
- ADS-B equipped
- Yes — Mode-S A44D11
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s failure to maintain directional control during landing in gusting tailwind conditions.
Factual narrative
The pilot reported that, during short final, the airplane encountered moderate turbulence, but he was able to maintain runway alignment and glide slope with constant power and flight control adjustments. During the landing roll, about 20 miles per hour, the tailwheel equipped airplane veered right. He applied full left aileron and rudder corrections, but the airplane continued to the right, exited the runway, impacted a garden post and came to rest upright in a row of trees. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The weather observation station located about 7 nautical miles from the accident site, about a minute after the accident, reported the wind was variable at 6 knots, gusting 15 knots. The pilot reported the wind was from 130º at 21 knots, gusting 30 knots. The airplane landed on runway 26. The pilot added that, after landing, the wind sock was discovered to be damaged, not indicating wind direction properly, was replaced days after the accident. The pilot reported that, during short final, the airplane encountered moderate turbulence, but he was able to maintain runway alignment and glideslope with constant power and flight control adjustments. During the landing roll, about 20 mph, the tailwheel-equipped airplane veered right. He applied full left aileron and rudder corrections, but the airplane continued to the right, exited the runway, impacted a post, and came to rest upright in a row of trees. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The weather observation station located about 7 nautical miles from the accident site reported that, about 1 minute after the accident, wind was variable at 6 knots, gusting to 15 knots. The pilot reported that the wind was from 130º at 21 knots, gusting to 30 knots. The airplane landed on runway 26. The pilot added that, after landing, the wind sock was found to be damaged and was not indicating wind direction properly; it was replaced after the accident. 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-Pilot - C
- — Environmental issues-Conditions/weather/phenomena-Wind-Tailwind-Effect on equipment
- — Environmental issues-Conditions/weather/phenomena-Wind-Gusts-Effect on equipment
- — Environmental issues-Physical environment-Object/animal/substance-Pole-Contributed to outcome
- — Environmental issues-Physical environment-Object/animal/substance-Wind sock-Effect on personnel
Verbatim from NTSB's published report. Source file
NTSB_2018_GAA18CA367.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
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Related research
Matched on aircraft type or causal vocabulary (turbulence). All research papers
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Wake vortices - strong, coherent air turbulences created by aircraft - pose a significant risk to aviation safety and therefore require accurate and reliable detection methods.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) Political Turbulence and Aviation Safety: A Cross-National Analysis of Political Stability's Effects on Aviation Accidents
To what extent does political stability affect aviation safety? This research aims to link domestic political conditions and public safety through the consideration of aviation accident frequency.
- arXiv 2024 · arXiv preprint Does small-scale turbulence matter for ice growth in mixed-phase clouds?
Representing the glaciation of mixed-phase clouds in terms of the Wegener-Bergeron-Findeisen process is a challenge for many weather and climate models, which tend to overestimate this process because…
- arXiv 2023 · arXiv preprint Effects of electrostatic interaction on clustering and collision of bidispersed inertial particles in homogeneous and isotropic turbulence
In sandstorms and thunderclouds, turbulence-induced collisions between solid particles and ice crystals lead to inevitable triboelectrification.
- 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).