Research On Safety Assessment Method Of Airline Operation

As one of the important research topics of airlines and civil aviation transport,the safety assessment of airline operation involves all aspects of airline operation.Safety analysis of airline operation is the basis of safety assessment of it.Most of the traditional safety analysis methods and models assume that events develop in chain and have causal correlation,and their limitations are increasingly prominent.With the increasing requirements for civil aviation safety,airline operation system,as a typical complex socio-technical system,has become an urgent problem to be solved in the field of civil aviation safety.This paper conducts various researches on the safety assessment of airline operation.The specific research contents are following:1.Based on the traditional analysis methods and models of unsafe events,combined with the functional resonance analysis method(FRAM),a safety analysis model is proposed.It is suitable for airline operation.By identifying and describing the attributes and changes of each function in the operation activities to obtain the risk factors related to flight and maintenance safety.2.By Bayesian network,the safety risk factors and their relations related to maintenance in airline operation are described.Then,and a safety assessment method based on maintenance unsafe events is established.The maintenance unsafe events of an airline company over the years are taken as data samples to analyze and form a database,which is used for the parameter learning of the model to form the safety assessment method of airline operation maintenance.3.Experts’ knowledge is used to study the flight safety of airline operation.Combined with the grey clustering and fuzzy theory,based on the G1 modified by entropy value,a combined safety assessment method is proposed.It can avoid the defect of the large sample size required by the traditional assessment methods.In this paper,safety risk factors are determined by functional modeling analysis of airline operation.Combined with different assessment methods,the safety of airline operation examples is assessed.At the same time,the applicability of the model and the method is verified.It provides an effective tool for the analysis and assessment of airline operation safety.