NTSB CAROL · Event
Event ANC05LA015
Registry · N9644G
FAA Aircraft Registry record.
Make / Model
CESSNA U206F
TCDS
A4CE · TEXTRON AVIATION INC
Engine
CONT MOTOR IO 520 SERIES (285 hp)
Seats / Engines
6 seats · 1 engine
Last airworthiness date
19880616
ADS-B equipped
Yes — Mode-S AD6DED
Registrant of record
KATMAI AIR LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's inadequate evaluation of the weather conditions, and his inadequate compensation for the wind conditions, which resulted in a loss of control and subsequent nose over during taxi from landing. A factor contributing to the accident was a tailwind.
Factual narrative
On November 19, 2004, at 1431 Alaska standard time, a tundra tire-equipped Cessna U206F airplane, N9644G, sustained substantial damage when it nosed over during taxi from landing at the Bethel Airport, Bethel, Alaska. The airplane was being operated as a visual flight rules (VFR) local area positioning flight under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by Katmai Air LLC, Anchorage, Alaska. The airline transport certificated pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed, and VFR company flight following procedures were in effect. The flight originated at the Napaskiak Airport about 1420. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on November 20, the director of operations for the operator reported that the pilot landed on runway 11 at the conclusion of the positioning flight. The pilot exited the runway by turning left at taxiway E and then proceeded toward the ramp area of the airport. The director of operations said that as the pilot turned the airplane toward the parking area, a right quartering tailwind lifted the tail of the airplane, and the pilot was unable to prevent the airplane from nosing over. The airplane received damage to the left wing, the left wing strut, and the vertical stabilizer. At 1430, a special weather observation at the Bethel Airport was reporting, in part: Wind, 160 degrees (true) at 26 knots, gusts to 35 knots; visibility, 10 statute miles; clouds and sky condition, 2,800 feet broken, 3,600 feet broken, 4,600 feet overcast; temperature, 37 degrees F; dew point, 31 degrees F; altimeter, 29.07 inHg; remarks, peak wind at 1423, 140 degrees (true) at 35 knots. In the Pilot/Operator Aircraft Accident Report (NTSB Form 6102.1) submitted by the pilot, the pilot indicated that his source of weather information was the Bethel Automated Terminal Information System (ATIS), and a "wind check" with Bethel's air traffic control tower. The pilot reported that the wind was 130 degrees (magnetic) at 22 knots, gusts to 27 knots. At the conclusion of the positioning flight, the airline transport certificated pilot exited the runway at a taxiway, and proceeded toward the ramp area of the airport. As he turned the airplane toward the parking area, a right quartering tailwind lifted the tail of the airplane, and the airplane nosed over. The airplane received damage to the left wing, the left wing strut, and the vertical stabilizer. A special weather observation at the airport was reporting, in part: Wind, 160 degrees (true) at 26 knots, gusts to 35 knots. The pilot indicated that his source of weather information was the Automated Terminal Information System (ATIS), and a "wind check" with the air traffic control tower. The pilot reported that the wind was 130 degrees (magnetic) at 22 knots, gusts to 27 knots. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_ANC05LA015.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 (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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