NTSB CAROL · Event
Event ERA12CA019
Aircraft involved
Probable cause & findings
The pilot did not maintain adequate airspeed while turning to the downwind leg, which resulted in an aerodynamic stall and spin.
Factual narrative
According to the pilot, while approaching the destination airport, he entered the traffic pattern by crossing the runway approximately 850 feet above ground level. He performed a "wing over," then turned back over the runway and began a turn to the left downwind leg of the traffic pattern. During the turn, the rudder "stuck" and the airplane entered a left spiraling descent. The pilot added full power, pushed the control stick forward, and attempted to apply right rudder. He attempted to dislodge the rudder by reaching for the passenger rudder pedal underneath and behind his seat, but was unsuccessful. Around 100 feet about ground level, the airplane exited from the spiral, continued to descend into the ground, then came to rest inverted, resulting in substantial damage to the wings and fuselage. According to a witness, the airplane was about 400 feet above ground level when it entered a steep left turn, and then entered a left hand spin. After one and one half revolutions the pilot recovered from the spin into a dive. The pilot was unable to recover from the dive before ground impact. A subsequent examination of the wreckage performed by a Federal Aviation Administration inspector verified full freedom of movement of the rudder and rudder pedals. There was no evidence of any pre-impact mechanical anomalies with the airplane. According to the pilot, while approaching the destination airport, he entered the traffic pattern by crossing the runway about 850 feet above ground level (agl). He performed a "wing over," then turned back over the runway and began a turn to the left downwind leg of the traffic pattern. During the turn, the rudder "stuck," and the airplane entered a left spiraling descent. The pilot added full power, pushed the control stick forward, and attempted to apply right rudder. He attempted to dislodge the rudder by reaching for the passenger rudder pedal underneath and behind his seat but was unsuccessful. About 100 feet agl, the airplane exited from the spiral and continued to descend into the ground, where it came to rest inverted, sustaining substantial damage to the wings and fuselage. According to a witness, the airplane was about 400 feet agl when it entered a hard left turn and then a spin. After 1.5 revolutions, the airplane exited the spin and began to pull out of the resulting dive before it impacted the ground. Examination of the wreckage verified full freedom of movement of the rudder and rudder pedals. There was no evidence of any preimpact mechanical anomalies with the airplane. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Airspeed-Not attained/maintained - C
Verbatim from NTSB's published report. Source file
NTSB_2011_ERA12CA019.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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