Military aircraft and engine maintenance repair and overhaul (MRO), modification, retrofit and alternation upgrades and logistics support. Design, mfg and assembly of aircraft and engine subassemblies. Design, mfg, assembly and after sales support of electronic, optronic and telecommunication products, co-development, co-production of radar and missile weapon systems. Satellite systems and applications including development of a satellite system network and the related telecommunications, observation and navigation applications. Technical training in a wide spectrum of aerospace and defence-industry-related disciplines. Precision measuring and calibration of production equipment. Certification for electromagnetic compatibility through its EMC Hellas subsidiary