NASA's Glenn Research Center is seeking input for the development of a Cryogenic Hydrogen Test Facility aimed at advancing hydrogen technology for aeronautic applications. The facility will enable safe testing of hydrogen-based systems and components, which are essential for future transportation innovations. This initiative is part of the Transformative Aeronautics Concepts Program, which focuses on promoting innovative aeronautics concepts while addressing technical and social challenges in aviation. Interested parties are encouraged to submit their feedback by February 21, 2025, to the primary contact, Ian C. Park, at ian.park@nasa.gov, or the secondary contact, Kevin Carroll, at kevin.m.carroll@nasa.gov.