Based the integration of empirical knowledge and rules

structure of fault tree

on the lack of physical and fault diagnosis rules supporting

the authors researched cases of aircraft malfunction and developed a method of constructing a case library; Currently

there are no standardized descriptions of these aircraft fault cases. As a result of the necessity of accurate fault diagnosis and its particularities

the authors built a model for aircraft malfunction diagnosis using fault tree analysis and its rules of inference. In addition

the classification method of case libraries derived from the model could potentially be beneficial in the process of updating existing case libraries. These case libraries may be applied to existing fault diagnosis systems

provide troubleshooting guidance

and enable effective fault diagnosis utilizing case-based reasoning

thereby improving their efficiency and proving the feasibility of the research methodology.