NTSB CAROL · Event
Event SEA00LA008
Aircraft involved
Probable cause & findings
Carburetor heat was not used prior to takeoff. Carburetor icing conditions and high vegetation were factors.
Factual narrative
On October 23, 1999, about 1645 Pacific daylight time, a Cessna 150B, N1252Y, registered to and operated by the commercial pilot, was substantially damaged during an off-airport landing following an abrupt loss of engine power, one mile east of the Green River Airstrip, Sweet Home, Oregon. Visual meteorological conditions prevailed and no flight plan was filed for the 14CFR91 personal flight. The commercial pilot, the sole occupant of the aircraft, was not injured. The flight originated from the Green River Airstrip approximately two minutes prior to the accident. During a telephone interview and subsequent written statement, the pilot reported that prior to takeoff, he was sitting with the engine idling for about five minutes while he programmed his GPS. The pilot then applied full power for takeoff, and the airplane lifted off at about 50 mph. The pilot established a 60 mph climb to about 300 - 400 feet when the engine "dogged down and then stopped." The pilot pitched the nose down to establish the best glide in an attempt to return to the runway. During the turn back, the pilot realized that he would not be able to return to the runway and he diverted to a nearby field. During the descent, the pilot pushed the mixture to rich and applied carburetor heat, however the engine would not start. The pilot continued with the forced landing to the field that was covered with berry vines. During the landing roll, the airplane collided with the berry vines, slid about 30 feet, then spun around about 150 degrees to the left before coming to rest. The pilot reported that there were no mechanical failures or malfunctions with the airplane at the time. In a side note on the attached Pilot/Operator Aircraft Accident Report Form, the pilot indicated, "maybe apply carb heat right before takeoff" in answer to how this accident could have been prevented, The nearest weather reporting facility located about 32 miles southwest of the accident site at Eugene, Oregon, indicated that the temperature was 60 degrees F, and the dew point was 46 degrees F. The attached carburetor icing probability chart for the reported temperatures indicates the probability of serious icing - cruise or climb power. The pilot reported that prior to takeoff, the engine was idling for about five minutes while he programmed his GPS. The pilot then initiated the takeoff. During the climb, the airplane attained an altitude of about 300 - 400 feet when the engine lost power. The pilot pushed the nose down to establish the best glide. During the turn back in an attempt to land on the runway, the pilot realized that he would not make it and diverted to a nearby field. During the descent, the pilot pushed the mixture to rich and applied carburetor heat, however, the engine would not start. During the landing roll in the field that was covered with berry vines, the airplane collided with the vines, slid about 30 feet, and spun around about 150 degrees to the left before coming to rest. The pilot reported that there were no mechanical failures or malfunctions with the airplane at the time. The carburetor icing probability chart for the reported temperature and dew point, indicate that the aircraft was operating in the range of serious icing - cruise or climb power. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_SEA00LA008.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 ↗