Air traffic system is analyzed from the aspects of system's attributes internal operating mechanisms and
external behaviors. A hybrid air traffic simulation model described by the combination of discrete event and continuoustime
models is proposed. The simulation model uses Agent-based techniques to describe micro behaviors of the air traffic
individuals and integrates micro behaviors into dynamic macro performance in system-wide level. Typical Agent-based
air traffic models such as aircraft agent and controller agent have been constructed. An arrivals and departures simulation
application has validated that the Agent based hybrid air traffic model is provided with high fidelity in micro behavior and
macro performance of the system.