NTSB CAROL · Event
Event DEN03LA104
Aircraft involved
Probable cause & findings
the pilot's improper in-flight planning and failure to maintain aircraft control. Contributing factors include high density altitude, hilly terrain, low airspeed and the subsequent inadvertent stall/mush.
Factual narrative
On June 13, 2003, at 1000 mountain daylight time, a Diamond Aircraft Industries DA 20-A1, N630DA, was destroyed when it impacted terrain west of Eureka, Utah. The private pilot and his passenger received minor injuries. Visual meteorological conditions prevailed and no flight plan had been filed for the local flight being conducted under Title 14 CFR Part 91. The flight originated from Provo, Utah, at 0815. According to the pilot, he was maneuvering over the sand dunes between Eureka and Delta. The temperature was rising and it started getting "bumpy" so he elected to return to Provo. While flying over the mountains west of Eureka, approximately 1,000 feet above ground level, his "controls became mush." The airplane began descending rapidly, at which time the pilot "put in full prop[eller] and power, pitch[ing] for 75 kts." It was apparent that the airplane would not clear the rising terrain so the pilot reversed course towards the "canyon." The pilot stated the airspeed was "right above stall speed." Subsequently, the airplane collided with the trees. The airplane's empennage was separated from the fuselage. An examination of the airplane's systems revealed no anomalies. According to the pilot, he was maneuvering over the sand dunes between Eureka and Delta. The temperature was rising and it started getting "bumpy" so he elected to return to Provo. While flying over the mountains west of Eureka, approximately 1000 feet above ground level, his "controls became mush." The airplane began descending rapidly, at which time the pilot "put in full prop[eller] and power, pitch[ing] for 75 kts." It was apparent that the airplane would not clear the rising terrain, so the pilot reversed course towards the "canyon." The pilot stated the airspeed was "right above stall speed." Subsequently, the aircraft collided with the trees. The airplane's empennage was separated from the fuselage. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_DEN03LA104.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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