Research Of Flight Safety Model Based On QAR

As part of a study of flight safety, this paper researches airborne QAR of digital data, describes detailed causes of the hard-landing event which is the research object, gives allowance definitions and knowledge rules to help accident experts for the cause of the incident investigation. As a pre-research of flight safety, it provides the technique for the subsequent task.Firstly, introducing study status of flight safety at home and abroad. Studying the Accident Investigation System, Incident Reports, Route Checking, FOQA and LOSA, compares the source data acquisition and effectiveness of the five systems, this paper proposes research goal of flight safety modeling based on QAR to help analysis of incident investigationSecondly, the QAR development history is introduced and the work of QAR data preprocessing is done.Thirdly, from the 78 categories events, the hard-landing event is selected as the research object. With aerodynamics of the aircraft and flight principle, from the multi-angle perspective of crew, aircraft, environment, management, the paper describes the reasons detailedly. Confirms the related parameters and gives the definition of event allowance and the knowledge rules which can help expert analyze the cause of event.At last, the safety model is applied to the actual QAR data and how the modeling method is extended to other flight incidents is presented.