The supply chain of commercial aircraft project determines the core competitiveness and competitive advantage of airborne equipment. Therefore, it is necessary for the company’s core procurement business (airborne equipment procurement) to implement the strategic management. Based on the Karajek model of airborne equipment procurement strategy, this paper takes the lowest total cost as the goal, and considers the security and economy of the airborne equipment supply. The Karajek model can be used to evaluate the supply economy and risk, and to establish a product category positioning model, which may be targeted to classify the installed products according to the importance of the airborne equipment (purchase amount ratio) and supplier dependence (supply risk) in order to develop different procurement strategies for different product categories.