NTSB CAROL · Event
Event CEN13LA068
Registry · N56226
FAA Aircraft Registry record.
Make / Model
BOEING A75L3
Year of manufacture
1941 · 71 years old at event
Engine
LYCOMING R680 (215 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19560215
ADS-B equipped
Yes — Mode-S A73115
Registrant of record
VAJDOES ROBERT C JR
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A partial loss of engine power during takeoff, likely due to the accumulation of carburetor ice.
Factual narrative
On November 20, 2012, about 1700 central standard time, a Boeing A75L3, N56226, was damaged when it overran the end of the runway and struck trees after an aborted takeoff from runway 35 at the Horizon Airport (74R), San Antonio, Texas. The pilot reported a loss of engine power which precipitated the aborted takeoff. The pilot and passenger were not injured. The airplane sustained substantial damage to the upper left wing spars. The aircraft was registered to an individual and operated by the commercial pilot under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The flight originated from the Stinson Municipal Airport (SSF) about 1650. The pilot stated that the flight began at SSF and an uneventful landing was performed on runway 16 at 74R. The airplane was turned around at the end of the runway for a takeoff from runway 34. The pilot reported that the winds were calm at this time. After liftoff, at about 15 feet above the ground, the pilot recognized that the airplane was not producing adequate power and was not accelerating and he landed the airplane. The airplane touched down near the departure end of runway, went off the end of the runway and struck trees. A witness stated that the airplane landed on runway 16, made a 180 degree turn at the end of the runway and departed from runway 34. The witness said that he saw the airplane become airborne and when it was about 20 to 30 feet above the ground it leveled off and appeared to lose power. On-scene examination of the airplane by a Federal Aviation Administration Airworthiness Inspector did not reveal any anomalies that would account for the loss of engine power. The engine was able to be rotated by hand and the intake and exhaust valves functioned normally. The engine oil level was normal and no oil was found in the engine's exhaust. Fuel was present in the fuel tank. The fuel shutoff valve was found in a partially closed position but fuel flowed freely through the fuel strainer and the flow did not decrease until the valve was turned much closer to the off position. The throttle control was found at idle, the mixture control in the full rich position, and the carburetor heat control in the off position. The temperature an dew point recorded at a station about 3 miles from the accident site were 24 degrees Celsius, and 14 degrees Celsius, respectively. According to a carburetor icing probability chart, the recorded temperature and dew point were in the range of susceptibility for moderate carburetor icing at cruise power setting and serious icing at descent power setting. The pilot's statement did not mention if carburetor heat was used during the previous landing, or during the accident takeoff. The pilot stated that an uneventful landing was performed on the grass runway and the airplane was turned around at the end of the runway for a takeoff in the opposite direction. The pilot reported that the winds were calm at this time. After liftoff, at about 15 feet above the ground, the pilot recognized that the airplane was not producing adequate power and was not accelerating and he landed the airplane. The airplane touched down near the departure end of runway, went off the end of the runway and struck trees. A witness stated that the airplane landed, made a 180 degree turn at the end of the runway and departed in the opposite direction. The witness said that he saw the airplane become airborne and when it was about 20 to 30 feet above the ground it leveled off and appeared to lose power. On-scene examination of the airplane did not reveal any anomalies that would account for the loss of engine power. The temperature an dew point recorded at the time of the accident were in the range of susceptibility for moderate carburetor icing at cruise power setting and serious icing at descent power setting. It is not known if the pilot used carburetor heat during the the landing before the accident, however, the carburetor heat control was found in the off position during postaccident examination. Based on the available information it is likely that the airplane's engine experienced carburetor icing which reduced the available power output of the engine. 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 Environmental issues-Conditions/weather/phenomena-Temp/humidity/pressure-Conducive to carburetor icing-Contributed to outcome - C
Verbatim from NTSB's published report. Source file
NTSB_2012_CEN13LA068.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 ↗