This paper is different with those paper which combined with the analytic hierarchy process (AHP) and grey prediction model to construct the accident emergency response plan (ERP), but used a system dynamic theory to analysis the key parameters in the evolution of civil aircraft accident and we put forward a new evolutional dynamical flow graph for the appeared aircraft incident in civil aviation system, and next step we combine with the improved K2 method based on Bayesian network to establish a more comprehensive and practical than the traditional decision model based on prior knowledge, and it can provide aided decision for civil aviation aircraft accident emergency action.
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