CHI95IA052
1994-12-05 · SAINT LOUIS, Missouri, United States · None · 1 aircraft · Status: Completed
Airport STL
Aircraft involved
Probable cause & findings
improper maintenance installation (fuel line fitting)by other maintenance personnel. A factor was the cross threaded fuel line fitting.
Factual narrative
On December 5, 1994, at 2208 central standard time, a Cessna 402, N412RW, registered to Redwing Airways of Kirksville, Missouri, experienced an engine fire while taxiing on taxiway W after landing at Lambert Field, Saint Louis, Missouri. The fire was extinguished by the airport fire department. The airplane sustained minor damage and the pilot reported no injuries. The 14 CFR Part 135 flight was a contract carrier for United Parcel Service and had just arrived at Saint Louis, having departed Kirksville at 2110. Visual meteorological conditions prevailed at the time of the event. The flight arrived on an IFR flight plan. The pilot stated that after landing and taxiing on taxiway W the engine "died." When he noticed that a fire had started in the left engine, he started it with the intention to "blow the fire out." When this did not work, he shut down the engine, turned off the fuel and exited the airplane. Subsequent to the event, an inspector from the Federal Aviation Administration examined the airplane and found that a fuel line fitting at the fuel controller was cross threaded where the fuel hose from the fuel pump connected to the fuel controller. Total mating of the fitting surfaces did not occur at this location. A check of maintenance records for the airplane did not reveal the last maintenance on this particular hose connection; although, the last 100 hours inspection occurred 14 hours prior to the event on November 16, 1994. WHILE TAXIING IN FROM A LANDING THE LEFT ENGINE CAUGHT ON FIRE. SUBSEQUENT EXAMINATION REVEALED THAT THE FUEL LINE FROM THE FUEL PUMP TO THE FUEL CONTROLLER WAS CROSS THREADED AT THE FITTING AT THE FUEL CONTROLLER. TOTAL MATING OF THE FITTING SURFACES DID NOT OCCUR. MOST RECENT MAINTENANCE ON THE FUEL LINE COULD NOT BE DETERMINED FROM MAINTENANCE RECORDS. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1994_CHI95IA052.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 (stall, maintenance). All research papers
- Embry-Riddle Scholarly Commons 2023 · Conference paper The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- 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…
- 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 …
- 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.