Abstract:With the continuous expansion of airline fleet, it is very important to systematically select aircraft performance and perform model matching according to different market demands and route demands. According to airline performance selection requirements, civil aviation regulations and airline route operation analysis reports, a performance selection index system with the performance priority of aircraft as the top target was established, and it was divided into 4 primary indicators and 19 secondary indicators. The subjective weight was obtained by using analytic hierarchy process, the objective weight was obtained by using the entropy weight method, and the combination weight was obtained by combining subjective weight with objective weight through combination weight method. The top order of weight is thrust weight ratio, direct operation cost, fuel consumption per engine hour, seat kilometer cost and single engine thrust. Then, based on the grey correlation TOPSIS method, an evaluation model for aircraft performance selection was established. Four typical models were selected for comprehensive evaluation, and proximity and ranking of each model were obtained. Therefore, an evaluation method for civil aircraft performance selection was obtained, which provides a theoretical basis for airlines to choose and purchase new aircraft.