NTSB CAROL · Event
Event SEA03LA034
Aircraft involved
Probable cause & findings
The pilot's failure to adequately remove ice/frost from the aircraft and to maintain airspeed during the initial climb after takeoff. An inadequate preflight was a factor.
Factual narrative
On February 4, 2003, about 0510 Pacific standard time, a Beech E18S twin-engine airplane, N48K, sustained substantial damage after impacting terrain shortly after takeoff from the Skagit Regional Airport (BVS), Burlington, Washington. The airplane is registered to Comanche Air Inc., Winthrop, Washington, and was being operated by Methow Aviation, of Burlington, Washington. The commercial pilot, sole occupant, was not injured during the 14 CFR Part 91 local flight. Visual meteorological conditions prevailed and no flight plan was filed. During a telephone interview and subsequent written statement, the pilot reported that during his preflight inspection he noticed ice and frost adhering to the airplane. He stated that after applying glycol to the wings and polishing and brushing off the frost, "then they were smooth." The pilot further stated that he let the engines warm up for 15 to 20 minutes before "taking it around the patch once to clear the airplane of the ice, and to make sure everything was working properly." Before releasing the brakes to take off, the pilot brought the power up on both engines "to make sure everything was in the green." After releasing the brakes, the pilot stated "I slowly brought the power up, maintaining 2000 rpm on the propellers." The pilot stated, "I tried to baby the engines using a less than max power for the departure." The tail of the airplane came up about 3/4 of the way down the 5,477 foot runway, and "seeing the end of the runway coming up, I added more power and pulled it off the ground." The pilot also reported that after seeing a "positive rate" he retracted the landing gear, and shortly thereafter "I felt the airplane mushing, like a stall. I then added more power, but the aircraft kept mushing, and then it impacted terrain with power on both engines." The aircraft came to rest in an open field located approximately 1/4 mile from the end of runway 28. After impact, the aircraft's engines separated at the firewall. Subsequently, the aircraft veered 90 degrees to the right, coming to rest in an upright position perpendicular to the runway. There was no post-impact fire. An FAA inspector, who traveled to the accident site, reported that both engines had separated from the firewall, the right wing sustained spar damage, both vertical stabilizers and rudders were bent. At 0505, the weather observation facility located at BVS reported wind calm, visibility 4 statute miles, temperature -1 degree C, dew point -1 degree C, and an altimeter of 30.45 inches of Mercury. The Director of Maintenance (DOM) for Methow Aviation reported that he arrived at the accident site about 0845 and observed ice adhering to most of the airplane. The DOM stated that the company does have a de-icing procedure which is normally done by the pilot. The pilot reported that during the preflight he noted ice and frost adhering to the airplane. After applying glycol he polished and brushed off the frost. The pilot warmed up the engines before taking off to stay in the pattern "to clear the airplane of the ice, and to make sure everything was working properly." Before releasing the brakes, the pilot brought the power up to make sure everything was in the green. The pilot stated that for takeoff, he "tried to baby the engines using a less than max power for the departure." The tail of the airplane came up about 3/4 of the way down the runway. Seeing the end of the runway, more power was added and the aircraft lifted off. The landing gear was raised when a positive rate was attained. Shortly after gear retraction the pilot stated that, "I felt the airplane mushing, like a stall. I then added more power, but the aircraft kept mushing, and then it impacted terrain with power on both engines." The aircraft came to rest in an open field located approximately 1/4 mile from the end of the runway. After the accident, ice was still noted adhering to most of the airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_SEA03LA034.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, stall, maintenance). 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 2023 · Faculty research project
Reconfigurable Guidance and Control Systems for Emerging On-Orbit Servicing, Assembly, and Manufacturing (OSAM) Space Vehicles
Dynamic response to emergent situations is a necessity in the on-orbit servicing, assembly, and manufacturing (OSAM) field, because traditional on-orbit guidance and control (G&C) cannot respond effic…
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
- NASA NTRS 2019 · Contractor Report (CR)
An Evaluation of an Analytical Simulation of an Airplane with Tailplane Icing by Comparison to Flight Data
This report presents the assessment of an analytical tool developed as part of the NASA/FAA Tailplane Icing Program. The analytical tool is a specialized simulation program called TAILSM4 which was de…
- NASA NTRS 2019 · Technical Publication (TP)
NASA/FAA Tailplane Icing Program: Flight Test Report
This report presents results from research flights that explored the characteristics of an ice-contaminated tailplane using various simulated ice shapes attached to the leading edge of the horizontal …
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