NTSB CAROL · Event
Event SEA04LA040
Registry · N6503C
FAA Aircraft Registry record.
Make / Model
LANCAIR LC42-550FG
Year of manufacture
2003 · 1 years old at event
Engine
CONT MOTOR IO-550 SERIES (300 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
20031112
ADS-B equipped
Yes — Mode-S A88F7E
Registrant of record
POTTS PHILLIP G
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot rated passenger's failure to maintain directional control during the landing roll. Inadequate supervision by the pilot-in-command (CFI) and a taxiway sign were factors.
Factual narrative
On February 10, 2004, at 0950 Pacific standard time, a Lancair LC42-550FG, N6503C, registered to Columbia Aero LLC, operated by Lancair as a 14 CFR Part 91 business flight, veered off the runway during the landing roll at Roberts Field, Redmond, Oregon, and collided with a taxi sign. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft was substantially damaged and the commercial pilot, flight instructor and two passengers were not injured. The flight departed from Bend, Oregon, about 10 minutes prior to the accident. During a telephone interview and subsequent written statement from both the commercial pilot and flight instructor, it was reported that the commercial pilot was in the left seat and at the flight controls for the landing to runway 10. The commercial pilot stated that the approach was normal. When the aircraft was over the runway, about four feet above ground level, the stall warning horn sounded and he "chopped the power," and the aircraft rapidly descended to the runway. The aircraft touched down slightly left of runway centerline and in a nose high attitude. After the aircraft touched down the commercial pilot applied full power. The aircraft veered to the left, and at this time the flight instructor stated that he got on the rudder pedals and flight control in an attempt to regain runway heading. The flight instructor not realizing at first that the commercial pilot had applied full power, called for the commercial pilot to reduce power. Power was reduced, however, the aircraft exited the runway surface traveling over gravel and snow. During the landing roll, the right wing collided with a taxi sign, the outboard section of the right wing flap separated at the two outboard flap hinges, and the right main landing gear tire separated from the gear leg. Both pilots reported no mechanical failures or malfunctions with the aircraft at the time of the accident. The commercial pilot at the controls and flight instructor in the right seat reported that during the approach for landing, about four feet above ground level over the runway, the stall warning horn sounded and the commercial pilot "chopped the power." The aircraft rapidly descended to the runway and touched down slightly left of centerline and in a nose high attitude. After touch down, the commercial pilot added full power, however the aircraft veered to the left. At this time the flight instructor took control of the aircraft in an attempt to regain runway heading. The flight instructor not realizing at first that the commercial pilot had applied full power, called for him to reduce power. Power was reduced, however, the aircraft exited the runway surface traveling over gravel and snow. During the landing roll, the right wing collided with a taxi sign, the outboard section of the right wing flap separated at the two outboard flap hinges, and the right main landing gear tire separated from the gear leg. Both pilots reported no mechanical failures or malfunctions with the aircraft at the time of the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_SEA04LA040.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 (stall). 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 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- 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.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- 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…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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