NTSB CAROL · Event
Event BFO85LA053
Registry · N65818
FAA Aircraft Registry record.
Make / Model
SCHWEIZER SGS 2-33A
Year of manufacture
1973 · 12 years old at event
Engine
NONE NONE
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19731010
ADS-B equipped
Yes — Mode-S A8AD0E
Registrant of record
HELGERSEN WILLIAM A SR
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Factual narrative
AFTER LIFTOFF BOTH THE PIC AND THE PLT GETTING CHECKED OUT IN THE SCHWEIZER SGS 2-33A STATED THAT THEY ENCOUNTERED MODERATE TURBULENCE IN THE AREA. WHEN THE SAILPLANE RECHED APPROXIMATELY 200 FT AGL THE TOM ROPE SEPARATED FROM THE AIRCRAFT AND N65818 WAS FORCED TO MAKE AN EMERGENCY LANDING DURING WHICH THE ACFT WAS SUBSTANTIALLY DAMAGED AND THE PIC SUFFERED SERIOUS INJURIES. EXAMINATION OF THE WRECKAGE REVEALED THAT THE TOW HOOK RELEASE SPRING TENSION WAS SET WITHIN MANUFACTURERS LIMITS AND ALL OTHER AIRCRAFT SYSTEMS APPEARED TO WORK PROPERLY. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1985_BFO85LA053.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 (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.
- 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.
- 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 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.
- 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).
Browse the full corpus — academia portal ↗