This presentation explores the vital collaboration between EASA Part 21J Design Organizations and Flight Test Departments in aircraft development. It highlights core synergy areas, including human factors, cockpit ergonomics, simulator prediction, testing strategies, and prototype configurations.  

Emphasizing a structured "predict-test-validate" approach, the deck stresses the importance of early flight test engineering involvement – especially in startups – to foster a strong safety culture, meet regulatory standards, and ensure an efficient path to certification.