NTSB CAROL · Event
Event FTW03LA164
Registry · N97DW
FAA Aircraft Registry record.
Make / Model
LANCAIR LEGACY
Year of manufacture
2008
Engine
CONT MOTOR IO-550 SERIES (300 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20080522
ADS-B equipped
Yes — Mode-S AD81AC
Registrant of record
WESTPHAL DANA L
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
the pilot's improper inspection of the aircraft after impacting trees on a previous flight which resulted in an in-flight separation of the lower left wing and aileron while performing aerobatic maneuvers.
Factual narrative
On May 31, 2003, approximately 1030 central daylight time, an Aerotek Pitts S-2A single-engine aerobatic bi-plane, N97DW, sustained substantial damage following a partial in-flight breakup while maneuvering near Grand Prairie Municipal Airport (GPM), Grand Prairie, Texas. The commercial pilot and his passenger were not injured. The airplane was registered to and operated by the pilot. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 personal flight. The local flight departed GPM at 1020. In an interview with the NTSB investigator-in-charge, the pilot stated that approximately 5 minutes into the flight, he was performing a power-on stall. During the stall, the airplane broke to the left, and then the airplane entered an inverted spin. During the recovery from the spin, an outboard section of the bottom left wing separated. Subsequently, the pilot returned to GPM and landed uneventfully. In an interview with an FAA inspector, the pilot stated that during the spin, the aircraft performed approximately two rotations. To recover the airplane, the pilot reduced power, and the airplane entered a nose low attitude. The pilot "pulled hard" to recover from the nose low attitude, and the airplane again broke to the left. During the recovery from the ensuing dive, the airplane was shuddering and a section of the lower left wing separated. The pilot stated that after the flight, the 'G' meter read +7.2/-2, and the flight lasted a total of 10 minutes. The FAA inspector reported the airplane has a +6/-3 'G' limit load factor, and a +9/-4.5 'G' ultimate load factor. In addition, the pilot reported approximately 30 days prior to the accident flight, during a low altitude pass over some of his property, the airplane impacted the tops of some trees. The pilot repaired the airplane fabric damage with duct tape and did not report what additional inspections and/or repairs had been completed. He also had not received any formal aerobatic instruction and was learning aerobatics on his own. Examination of the airplane by the pilot revealed that a 4-foot portion of the bottom left wing and the left aileron had separated from the aircraft. According to an FAA Airworthiness Inspector who examined the airplane, the forward wooden wing spar was splintered and fractured, and the aileron was separated. The separated section and aileron were not recovered. Numerous attempts to obtain a completed NTSB Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) from the pilot were unsuccessful. During the recovery from an aerobatic maneuver, a section of the lower left wing separated in-flight, and the airplane landed uneventfully at the departure airport. Approximately 5 minutes into the flight, the pilot was performing a power-on stall. During the stall, the airplane broke to the left, and then the airplane entered an inverted spin. During the spin, the aircraft performed approximately two rotations. To recover, the pilot reduced power, and the airplane entered a nose low attitude. The pilot "pulled hard" to recover from the nose low attitude, and the airplane again broke to the left. During recovery of the ensuing dive, the airplane was shuddering and a section of the lower left wing separated. Approximately 30 days prior to the accident flight, during a low altitude pass over some of the pilot's property, the airplane impacted the tops of some trees. The pilot repaired the airplane fabric damage with duct tape and did not report what additional inspections and/or repairs had been completed. He also had not received any formal aerobatic instruction and was learning aerobatics on his own. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_FTW03LA164.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…
Browse the full corpus — academia portal ↗