Ground proximity warning mission system dynamic safety modeling based on SoTeRiA

From the viewpoint of mission's completion, the occurrence of any failure or safety accident is decided by multiple complex and dynamic factors. The safety analysis methods in present only focus on failure modes in system itself, rather than the whole mission system dynamical process, the Ground Proximity Warning System (GPWS)'s mission dynamic safety modeling was presented based on SoTeRiA in this paper. Combining with the technical system risk model, maintenance process model and organizing risk model, the model of dynamic safety analysis was established. Case study in the end shows the effectiveness of the proposed method.