Reliability is defined as a vehicle system’s capability to perform its required function. Reliability analysis methods are defined by the international standard IEC 60300-3-1. One of the most widely used quantitative analyses is the Reliability Block Diagram (RBD) method. The theoretical and practical investigation of canonical systems and their reliability has become important in several fields of vehicle engineering. This raises crucial questions regarding the sensitivity of reliability of the investigated vehicle system. The main aim of this paper is to show the implementation of mathematical diagnostic methodology of aircraft systems and gas turbine engines in order to determine the sensitivity of reliability of a canonical vehicle system. The proposed method is called Hierarchical Sensitivity Model of Reliability Block Diagram (HSMoRBD). This work demonstrates the theory of the proposed method and shows its applicability by way of an example.
