OSSA  has worked with all its might since the day of its establishment to increase the domestic production share in the provision of  the needs of the defence and aviation sectors and to  carry the SMEs in a position to compete in the international market. Currently, OSSA performing domestic and international activities together with its 155 members, as the main industry firms are quite important for the SMEs, has performed activities oriented to increase the cooperation between cluster members and main contractors, and activities oriented to bring sectored requirements and demands to its firms.  It realized factory visits with its members frequently, organized one-to-one talks and meetings with corporation managers. Participated in the meetings held by main industry firms and sometimes hosted these meetings. 

OSSA, along with these, established connection with the biggest firms of the sector in the international arena frequently. By realizing visits to the offices of Airbus, Rolls-Royce, Thales, Safran, Eurosam, Spirit, Rosso Boron Export, Alenia, SAAB, Agusta Westland and KAI firms, made contacts directed to increase the business volume of its members.