Risk impact indicator analysis of runway excursion event

Research on the risk of runway excursion events is mostly based on accident statistics. Analysis is rarely conducted from flight data and flight operation characteristics. Therefore，based on the QAR（quick access recorder）data，the risk analysis for runway excursion is performed. The QAR data is divided into three categories：flight status，operation instructions and information，so as to analyze the status of the aircraft in the three stages of takeoff run，landing and landing run. Through the operating characteristics reflected by the QAR data，combined with the SOP（standard operating procedures），the operations that exceed the normal data and do not conform to the standard operations can be deduced，and the risk factors affecting the normal flight are obtained. Based on the 2-4 model of behavior safety，the risk assessment index system of runway excursion can be established. Based on the causative mechanism of an accident，focusing on the analysis of operational characteristics and human factors，the risk prevention a