; 49 U.S.C. 40101 note). 6. 21st Century Aeronautics Research Capabilities Initiative (a) Establishment The Administrator shall establish a 21st Century Aeronautics Capabilities Initiative, within the Construction and Environmental Compliance and Restoration Account, to ensure that NASA possesses the infrastructure capabilities and computational tools necessary to conduct proposed flight demonstration projects across the range of NASA aeronautics interests. As part of such Initiative, the Administrator shall carry out the following activities: (1) Any investments necessary to upgrade and create facilities for civil and national security aeronautics research to support advancements in long-term foundational science and technology, advanced aircraft systems, air traffic management systems, fuel efficiency and electric propulsion technologies, system-wide safety assurance, autonomous aviation, and supersonic and hypersonic aircraft design and development. (2) Any measures supporting flight testing activities, to include continuous refinement and development of free-flight test techniques and methodologies, upgrades and improvements to real-time tracking and data acquisition, and any other measures related to aeronautics research support and modernization as the Administrator may consider appropriate to carry out the scientific study of the problems of flight, with a view to their practical solution. (b) Authorization of appropriations For the purpose of carrying out this section, there are authorized to be appropriated to NASA $100,000,000 for each of fiscal years 2019 through 2023, to be derived from amounts otherwise authorized to be appropriated to NASA. (c) Report (1) Report required Not later than 120 days after the date of enactment of this Act, the Administrator shall transmit to Congress a report containing a 5-year plan for the implementation of the 21st Century Aeronautics Research Capabilities Initiative. (2) Elements The report required by this subsection shall include— (A) a description of proposed