ANC96LA022
1995-12-12 · DELTA JUNCTION, Alaska, United States · None · 1 aircraft · Status: Completed
Airport D66
Current FAA registration · N4589M
- Make / Model
- PIPER PA-11
- Year of manufacture
- 1947 · 48 years old at event
- Engine
- CONT MOTOR C85 SERIES (85 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19551029
- ADS-B equipped
- Yes — Mode-S A59373
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's inadequate preflight preparation/planning, and his improper in flight decision making. Factors associated with the accident are the gusty crosswinds and associated turbulence.
Factual narrative
On December 12, 1995, about 1000 Alaska standard time, a ski equipped Piper PA-11, N4589M, collided with trees during an aborted takeoff at the Delta Junction airport, Delta Junction, Alaska. The airplane was being operated as a visual flight rules (VFR) local area personal flight when the accident occurred. The airplane, registered to and operated by the pilot, sustained substantial damage. The certificated private pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The pilot reported that he was departing runway 13 and had just lifted off the ground. As the airplane crossed the intersection of runway 08, the pilot encountered severe turbulence and decided to abort the takeoff. The airplane collided with several trees about 15 feet above the ground, about 700 feet beyond the departure end of the runway. The airplane received damage to the left wing and fuselage. The pilot indicated that the weather conditions at the time were: Sky condition and ceiling, 3,000 feet overcast; visibility, 30 miles; temperature, 0 degrees F; wind, 090 degrees at 20 knots, gusting to 25 knots. The pilot wrote in his report to the NTSB, under the heading: Recommendation (How Could This Accident Been Prevented): "Waiting for lighter winds or sufficient snow cover to utilize the airstrip pointed into the wind." The pilot reported he was attempting to takeoff in his ski equipped airplane in a gusting crosswind estimated at 25 knots. He said he elected to use the runway subjected to the greatest crosswind because it also had the most amount of snow on it. Soon after becoming airborne, the airplane encountered severe turbulence, and the pilot elected to abort the takeoff. The airplane was not in a position to land on the runway or clear nearby obstructions when the pilot aborted the takeoff. The airplane subsequently collided with trees adjacent to the runway. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1995_ANC96LA022.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
- 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.
- arXiv 2025 · arXiv preprint Explainable LiDAR 3D Point Cloud Segmentation and Clustering for Detecting Airplane-Generated Wind Turbulence
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).