CEN12LA566
2012-08-21 · Gilmer, Texas, United States · Serious · 1 aircraft · Status: Completed
Airport JXI
Aircraft involved
Probable cause & findings
The disconnected metering unit fuel line, which resulted in a loss of engine power.
Factual narrative
On August 21, 2012, approximately 1740 central daylight time, a Thorp T-18 experimental amateur-built airplane, N2443, sustained substantial damage when it impacted terrain during an attempted takeoff from Gilmer Municipal Airport (JXI), Gilmer, Texas. The airline transport pilot sustained minor injuries, and the pilot-rated passenger sustained serious injuries. The airplane was registered to McClendon Associates and operated by the pilot under the provisions of the 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 was destined for Denton, Texas. According to the pilot, the fuel tanks were 3/4 full. Prior to takeoff, the pilot completed an engine run up with no problems noted. Shortly after takeoff, the engine rpm rolled back from 2,300 to 1,500 rpm. The pilot attempted to restore engine power; however, he was unsuccessful. The pilot executed a forced landing to tree-covered terrain. The airplane impacted several trees and came to rest upright. A review of the engine maintenance records showed the engine underwent a conditional inspection on September 1, 2011, at a tachometer time of 930.9 hours. The engine was overhauled on March 23, 2003, at a tachometer time of 593.4 hours. On September 21, 2012, at the facilities of Air Salvage of Dallas, Lancaster, Texas, the engine was examined under the supervision of a Federal Aviation Administration inspector. Examination of the engine revealed that the fuel line from the fuel pump to the metering unit was disconnected at the metering unit. No other anomalies were noted with the engine during the examination. Shortly after takeoff, the engine lost power, and the pilot performed a forced landing to wooded terrain. Examination of the engine revealed the fuel line from the fuel pump to the metering unit was disconnected at the metering unit. This disconnection would result in a loss of engine power. No additional anomalies were noted during the airframe and engine examination. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- — Aircraft-Aircraft systems-Fuel system-Fuel distribution-Incorrect service/maintenance
- C Aircraft-Aircraft systems-Fuel system-Fuel distribution-Malfunction - C
- — Personnel issues-Task performance-Maintenance-Installation-Maintenance personnel
Verbatim from NTSB's published report. Source file
NTSB_2012_CEN12LA566.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (maintenance). All research papers
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA) From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2026 · Article (Reliability Engineering & System Safety) Understanding human error in military aviation maintenance: The role of Performance shaping factors, cognitive workload and error orientation
- Semantic Scholar 2025 · Article (Applied Sciences) Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Semantic Scholar 2024 · Article (Defence Science Journal) Modelling of Human Factors in Aviation Maintenance Using HFACS ME Human Factors Analysis and Classification System Maintenance Extension and Bayesian Network
Aircraft maintenance is a complex task involving a skilled human workforce, spare parts, and various other resources. Human factors are an inherent element of the human workforce.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER) A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER) Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…