NTSB CAROL · Event
Event DFW05CA093
Aircraft involved
Probable cause & findings
The pilot's inadequate use of carburetor heat, which resulted in carburetor ice and the loss of engine power. A contributing factor was conditions conducive to carburetor icing.
Factual narrative
On March 18, 2005, approximately 1710 central standard time, a Cessna 172M single-engine airplane, N91505, was substantially damaged when it impacted trees during a forced landing following a reported loss of engine power while on final approach to the David Wayne Hooks Airport (DWH), near Spring, Texas. The private pilot and 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 18-nautical mile cross-country flight originated from the Lone Star Executive Airport (CXO), near Conroe, Texas, approximately 1650, and was destined for DWH. The 450-hour pilot reported in the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) that after a non-eventful flight he was cleared to land on runway 17R (7,009-feet long and 100-feet wide asphalt runway) at the David Wayne Hooks Airport. During the landing approach the pilot noted that the airplane's altitude was high and the indicated airspeed was high, so he pulled the engine back and extended the flaps to the 20 degree position. After turning on final approach to the runway, the pilot applied 10 more degrees of flaps, and then noticed that the airplane "began sinking at a fast rate." Subsequently, the engine lost power and the pilot initiated a forced landing. During the forced landing, the airplane struck the tops of trees, nosed over, and impacted terrain before coming to rest in a nose-low attitude. At 1653, the Automated Surface Observing System at DWH reported wind from 200 degrees at 13 knots gusting to 19 knots, visibility 10 statute miles, clear sky, temperature 22 degrees Celsius, dew point 9 degrees Celsius, and an altimeter setting of 29.81 inches of Mercury. A review of the Carburetor Icing Probability Chart revealed that a the time of the engine loss of power, the airplane was operating within the "Serious Icing at Glide Power" range. Examination of the airplane by an Federal Aviation Administration (FAA) inspector, who responded to the accident site, revealed that the airplane came to rest nose low in a heavily wooded area. The leading edge of both wings was crushed aft, and the engine was partially separated from the engine firewall. Fuel was observed in both wing fuel tanks. Examination of the Lycoming 0-320-E2D engine by an FAA inspector revealed that the carburetor control at the air box functioned normally, and compression was noted on all four cylinders. No mechanical anomalies were noted during the examination. The 450-hour pilot reported that after a while entering the pattern to land on runway 17R, he noted that the airplane's altitude was high and his airpeed was also high. He reported reducing engine power and extending the flaps to 20 degrees. After turning on final approach to the runway, the pilot extended the flaps an additional 10 degrees and then noticed that the airplane "began sinking at a fast rate." Subsequently, the engine lost power and the pilot initiated a forced landing. During the forced landing, the airplane struck tops of trees, nosed over, and impacted terrain before coming to rest in a nose low attitude. The weather reporting station at the airport reported temperature 71 degrees Fahrenheit and dew point 48 degrees Fahrenheit 17 minutes prior to the accident. According to information on a Carburetor Icing Probability Chart at the operating temperature/dew point, the airplane was found to be operating within the "serious icing at glide power" range. Examination of the engine revealed no mechanical anomalies. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2005_DFW05CA093.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 ↗