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An aircraft design and certification company with EASA Part 21J and GCAA DOA Part 21 approvals. With industry leading expertise and capabilities, AES can deliver projects ranging from minor engineering changes to full aircraft retrofits for leading airlines, aircraft leasing, MROs and OEMs. AES has developed over 3,000 modifications and STC’s in all aspects of cabin interior, aircraft transitions, exterior, structural and avionic changes for commercial, business and private jet aircraft.