NTSB CAROL · Event
Event WPR12LA211
Aircraft involved
Probable cause & findings
The student pilot's failure to maintain directional control during takeoff.
Factual narrative
On May 13, 2012, about 1430 mountain standard time, a Beech F33A, N5521A, sustained substantial damage during takeoff at the Mobile Airport (1AZ0), Mobile, Arizona. The airplane was registered to Airline Training Center Arizona, Inc, and operated as an instructional flight under the provisions of Title 14 Code of Federal Regulations Part 91. The student pilot, sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed and a company flight plan was filed. The local flight originated from the Phoenix-Goodyear Airport (GYR), Goodyear, Arizona, about 1309. The student pilot reported that he was practicing a series of full stop landings and takeoffs at 1AZ0. The first three landings and takeoffs were uneventful and he noted that the wind was light, requiring almost no crosswind correction, however, he observed several "dust devils" near the airport and throughout the valley. The student pilot stated that as he taxied onto runway 9, a 4,500-foot long, 75-foot wide asphalt runway, the windsock indicated northerly wind from seven to eight knots and that the dust devil southeast of the airport could not be seen anymore. The student pilot applied takeoff power and the airplane accelerated along the centerline of the runway. As the airspeed accelerated through about 50 to 55 knots, the airplane suddenly yawed to the left and despite the student pilot's control inputs, continued to the left and exited the runway. Subsequently, the airplane struck several bushes to the left of the runway. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the inboard portion of the right wing was crushed aft. Additional damage was observed on the right horizontal stabilizer. The FAA inspector reported that flight control continuity was established throughout the airplane's primary flight control system. Examination of the nose wheel landing gear and steering linkages revealed no mechanical anomalies that would have precluded normal operation. A review of recorded data from a weather station located GYR, located about 19 miles north of the accident site, revealed at 1447 conditions were wind from 250 degrees at 10 knots, visibility 10 statute miles, few clouds at 15,000 feet, temperature 39-degrees Celsius, dew point -1 degree Celsius, and an altimeter setting of 29.87 inches of Mercury. The student pilot stated that he applied takeoff power, and the airplane accelerated along the centerline of the runway. As the airplane accelerated through about 50 to 55 knots, it suddenly yawed to the left. Despite the student pilot's control inputs, the airplane continued to the left and exited the runway. Examination of the airplane's flight control system and nose wheel steering system revealed no mechanical failures or malfunctions that would have precluded normal operation. 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 Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2012_WPR12LA211.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). 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 · Contractor Report (CR)
Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint
Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- NASA NTRS 2025 · Presentation
NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- arXiv 2024 · arXiv preprint
An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…
- NASA NTRS 2024 · Presentation
NASA Icing Update – Oct 2024
This presentation provides a status update on select NASA icing research activities for the SAE AC-9C Icing Technical Committee Meeting on Oct 21, 2024.
Browse the full corpus — academia portal ↗