Data-driven hierarchical decision support for civil aviation maintenance safety risk: A fusion of Bayesian network and system dynamics
Abstract
To enhance the scientificity and precision of risk analysis and management decision-making in aircraft maintenance operations, this study proposes a risk analysis-decision model tailored to maintenance events. Based on actual civil aviation maintenance scenarios, the model employs real data to conduct data-driven analysis and precisely calculates the occurrence probabilities of various risk factors by constructing a Bayesian risk probability network. Meanwhile, it selects three categories of key risk factors: personnel (A), management (B), and organization (C), to build a system dynamics scenario, thereby simulating the long-term implementation effects of different management strategies. The research findings indicate that the existing maintenance management system demonstrates a certain level of risk buffering efficacy under normal operating conditions, effectively preventing risks from evolving into higher severity levels. The combinations of key risk factors at different severity levels exhibit a hierarchical characteristic, specifically manifesting as three tiers dominated by organization and safety barriers, personnel capabilities and behaviors, and daily operations and slow-variable risks, respectively. It is proposed that maintenance safety risk governance should adopt a graded and differentiated management strategy. At the decision-making level, the model is capable of simulating the long-term impacts of different management strategies. The study reveals that increasing management investment can significantly reduce process risks, whereas systemic risks and frontline operational errors require sustained, long-term resource allocation for improvement.
Copyright (c) 2026 Jirong Duan, Ming Cheng

This work is licensed under a Creative Commons Attribution 4.0 International License.
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