There are a lot of studies on outsourcing and its strategic influence to sustainable growth in the organizations, but little is known about how the subjective thoughts for strategic outsourcing decisions transformed to objective criteria. This study examines a model that evaluates the core capabilities for strategic outsourcing decision. The aim of this study is to evaluate the core competencies of the aviation maintenance centers for strategic outsourcing. AHP method, which is more of a selection tool and is appropriate in decision making situations, where both quantitative and qualitative criteria have to be considered, is used while evaluating the core capabilities. The criteria, such as flight operation effectiveness, flight safety, technological feature, cost effectiveness, usage quantity, procuring sufficiency and work force, are included in the model. The research data were collected from three aviation maintenance centers which are the primary logistics and maintenance centers for aviation industry. The results indicate that at technological level, machining and composite technologies; at product group level, structural parts on aero planes and brake system parts are core competence logistics parts for these aviation maintenance centers.