In 2023 we started the Cluster Sustainable Aviation Systems Technology. This SIG is a result of the Energy carriers working group with which we have organized several theme sessions over the past two years in the field of the development of hydrogen and/or electrically powered aircraft. In the meantime, so many developments are taking place in the Growth Fund program “Luchtvaart in Transitie” and the Electric Flying Connection (EFC), among others, that we have entered a new phase with regard to R&D and industrial projects. The objective of this new SIG is to use the knowledge and expertise we have with a more programmatic approach to jointly get more business from making aviation in the Netherlands more sustainable with existing, but also with new (cross-sectoral) parties. We need to prepare for a transition that is coming our way and will mean a demand for new primary and secondary propulsion systems, which will also have an operational impact on the airport infrastructure and on the way we collaborate with existing and new parties across the business ecosystem.