The supply chain of aviation is extremely complex with flow of structural components, hardware, software and data between many organizations. The supply chain includes a high number horizontally – many suppliers to one customer – and vertically – many sub-tier suppliers to each supplier. This situation provides a large surface where the aviation ecosystem can be attacked. This report provides recommendations on how the difficult supply chain topic can be divided into simpler, manageable sub-problems with distinct solutions. For each part of the supply chain, this report provides recommendations on suitable organizational and technical controls.