Multi-attribute Aviation Safty Risk Assessment Based on Fuzzy Theory

On the basis of dividing aviation safety risk factor from importance,severity,detection and possibility four-dimensional degree attributes,making use of Fuzzy theory,Euclidean distance formula and principles of FMECA,Multi-attribute risk factors assessment model is established.Through the expert questionnaire,on the basis of identification of aviation safety risk factors,using this model,the key exponent index ranking of all risk factors are calculated.Finally risk assessment model for the sensitivity analysis is given.The proposed model is in easy structure,and it can be directly used for safety-managing work.