Abstract: According to the types of the team safety behavior risks in air traffic control (ATC), team behavior risk indexes are selected through practical investigation. Then, analytic hierarchy process (AHP) is used to build an index system. A comprehensive evaluation model is developed by weighting team safety behavior risks described by the risk destruction and resistance factors. In the model, it takes the age, professional level, and education as the control variables.  By using the orderly clustering of optimal partition algorithm, we take team's performance as reference sequence to define the risk threshold value of the team safety behavior. Results show that the team's safety risk behavior depends heavily on variable titles and ages in ATC. Its alarm threshold division is relatively stricter and obviously narrower than the part of diploma control. With full consideration of the total control variables by the proposed method, the risk threshold value is reasonable such that the threshold is neither too loose nor too strict, which can reduce both false positive and negative.

Key words: air traffic control, safety behavior risks, warning threshold value