; 49 U.S.C. 40101 note) and the item relating to that section in the table of contents under section 1(b) of that Act are repealed. 504. Air traffic control operational contingency plans (a) Air traffic control operational contingency plans Not later than 1 year after the date of enactment of this Act, the Administrator shall review the Administration’s air traffic control operational contingency plans (FAA Order JO 1900.47E), and, as the Administrator considers appropriate, update such plans, to address potential air traffic facility outages that could have a major impact on the operation of the national airspace system, including the most recent findings and recommendations in the report under subsection (c). (b) Updates Not later than 60 days after the date the air traffic control operational contingency plans are reviewed under subsection (a), the Administrator shall submit to the appropriate committees of Congress a report on the review, including any recommendations for ensuring air traffic facility outages do not have a major impact on the operation of the national airspace system. (c) Resiliency recommendations Not later than 180 days after the date of enactment of this Act, and periodically thereafter as the Administrator considers appropriate, the Administrator shall convene NextGen program officials to evaluate, expedite, and complete a report on how planned NextGen capabilities can enhance the resiliency and continuity of national airspace system operations and mitigate the impact of future air traffic control disruptions. 505. 2020 ADS-B Out mandate plan The Administrator, in collaboration with the NextGen Advisory Committee, shall— (1) not later than 90 days after the date of enactment of this Act— (A) identify any known and potential barriers to compliance with the 2020 ADS–B Out mandate under section 91.225 of title 14, Code of Federal Regulations