NTSB CAROL · Event
Event CHI02LA008
Registry · N840WA
FAA Aircraft Registry record.
Make / Model
AMERICAN CHAMPION AIRCRAFT 8KCAB
Year of manufacture
2009
Engine
LYCOMING AEIO-360-H1B (180 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
20090721
ADS-B equipped
Yes — Mode-S AB81CE
Registrant of record
OWATONNA WARRIOR LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The dual student pilot's failure to maintain control of the helicopter, his failure to maintain altitude/clearance from the terrain, and the inadequate supervision by the flight instructor. A factor was the gusty wind condition.
Factual narrative
On October 19, 2001, at 1630 eastern daylight time, a Bell 47G-2 helicopter, N840WA, piloted by a certified flight instructor (CFI) and dual student, was substantially damaged on impact with terrain and subsequent fire while hovering at the Clark County Airport, Jeffersonville, Indiana. The student was the holder of a private pilot certificate with a helicopter rating. The 14 CFR Part 91 flight was operating in visual meteorological conditions and was not on a flight plan. The CFI and student received minor injuries. The local flight originated at 1540. In a written report, the dual student said that they were practicing rudder turns. He said that he raised up to a hover, rotated 90 degrees and then set the helicopter back down on the ground. He said he then raised up to a hover again and rotated 90 degrees with the helicopter facing downwind. He said that the helicopter seemed somewhat unstable in the gusty tailwind. He said that the helicopter came up in the front and then he felt a vibration in the tail. He said that the helicopter turned and the left skid impacted the ground and the helicopter rolled onto its left side. In a written report, the CFI said that, after a rudder turn when the helicopter was facing downwind, the student, "...very abruptly pitched the nose up reacting to the wind behind him. The abrupt pitch attitude allowed the tail to strike the ground." The CFI said that the aircraft was uncontrollable at that point and ultimately rolled onto its left side. A weather reporting station located about 9 miles and 157 degrees from the accident site recorded the winds as 10 knots gusting to 18 knots from 230 degrees at 1553. A postaccident examination of the helicopter revealed no anomalies that could be associated with a pre-impact condition. The report filed by the CFI listed no mechanical malfunction. The helicopter was damaged when it impacted the ground and burned while hovering. The helicopter was piloted by a certified flight instructor (CFI) and dual student. The student was the holder of a private pilot certificate with a helicopter rating. In a written report, the dual student said that he raised the helicopter up to a hover and rotated 90 degrees with the helicopter facing downwind. He said that the helicopter seemed somewhat unstable in the gusty tailwind. He said that the helicopter came up in the front and then he felt a vibration in the tail. He said that the helicopter turned and the left skid impacted the ground and the helicopter rolled onto its left side. In a written report, the CFI said that, after a rudder turn when the helicopter was facing downwind, the student, "...very abruptly pitched the nose up reacting to the wind behind him. The abrupt pitch attitude allowed the tail to strike the ground." The CFI said that the aircraft was uncontrollable at that point and ultimately rolled onto its left side. A weather reporting station located about 9 miles and 157 degrees from the accident site recorded the winds as 10 knots gusting to 18 knots from 230 degrees at 1553. No anomalies were found with respect to the helicopter and none were reported. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2001_CHI02LA008.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 (icing). 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 2026 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗