NTSB CAROL · Event
Event CEN11LA466
Aircraft involved
Probable cause & findings
The pilot did not maintain sufficient airspeed while maneuvering at low altitude, which resulted in an inadvertent stall and spin.
Factual narrative
On July 9, 2011, at 1105 central daylight time, N22DH, a Dehavilland DHC-1, sustained substantial damage after it lost control on final approach to runway 17 at Lloyd Stearman Airport (1K1), Benton, Kansas. The private pilot/registered owner sustained serious injuries. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight conducted under 14 Code of Federal Regulations Part 91. Two witnesses, who were flying a helicopter in the traffic pattern, saw the airplane enter a sudden, 360 degree turn to the right over the end of the runway. According to one witness, as the airplane entered the turn, the wings appeared to buffet but the pilot recovered on a north heading about 200 feet above the ground. As the pilot attempted to turn back to the runway, the airplane stalled and spun to the right. It collided with terrain about a half mile north west of the runway. According to a Federal Aviation Administration (FAA) inspector, he along with two other inspectors, performed a postaccident examination of the airplane and interviewed the pilot. He said the pilot had recently purchased the airplane and was practicing touch and go landings when the accident occurred. The pilot said that while on final approach, he made a right 360 degree turn for spacing and subsequently got slow, stalled, and entered a spin. The pilot was unable to recover from the spin before the airplane struck the ground. The airplane came to rest against a residential shed resulting in substantial damage to the fuselage, both wings, and the tail section. There was no postimpact fire. The pilot reported there were no mechanical problems with the airplane or engine prior to the accident. The pilot stated he was practicing touch-and-go landings and takeoffs when he made a tight 360-degree turn in the pattern for spacing. During the turn, he allowed the airplane to get slow. The airplane stalled and entered a spin with insufficient altitude to recover. The airplane collided with terrain and came to rest against a shed. The pilot reported that there were no mechanical problems with the airplane or the engine prior to the accident. 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-Action/decision-Action-Incorrect action performance-Pilot - C
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Airspeed-Not attained/maintained
Verbatim from NTSB's published report. Source file
NTSB_2011_CEN11LA466.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). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- 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 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 …
- NASA NTRS 2019 · Other
[Tail Plane Icing]
The Aviation Safety Program initiated by NASA in 1997 has put greater emphasis in safety related research activities. Ice-contaminated-tailplane stall (ICTS) has been identified by the NASA Lewis Icin…
- Embry-Riddle Scholarly Commons 2019 · Journal article (IJAAA)
Airport Policing in Pakistan: Structure, Training, and Issue
Airports are strategically and economically important installations of any country. Airports are the gateway of any country and any incidents at these gateways may harm the very aspects of a country i…
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