Aiming at the problem that the maintenance support operation of aircraft is restricted under the special conditions of ship-based, an aircraft maintenance support operation model based on colored time Petri net is proposed. The ECRS method is used to optimize the existing operation process, and the colored time Petri net is used to establish the aircraft maintenance support operation model by taking the mechanical inspection process as an example. By optimizing the mechanical inspection process and simulating the maintenance time of different maintenance personnel combinations, the priority of serial processes, the impact of parallel to serial conversion and the overall efficiency optimization results are obtained. The simulation results show that the model can obtain the optimal combination of resource allocation in the case of limited maintenance support resources, which has a certain guiding significance for shortening the maintenance time, improving the utilization rate of maintenance resources and enhancing the flight timeliness of aircraft.