(3) Performance-based navigation baseline equipage requirements In carrying out paragraph (1), the Administrator shall issue such regulations as may be required, and publish applicable advisory circulars, to establish the equipage baseline appropriate for aircraft to safely use performance-based navigation procedures. (4) Utilization action plan Not later than 180 days after enactment of this Act, the Administrator shall, in consultation with certified labor representatives of air traffic controllers and the NextGen Advisory Committee, develop an action plan to utilize performance-based navigation procedures as a primary means of navigation to further reduce the dependency on legacy systems within the national airspace system. (d) Data communications (1) In general Not later than 2 years after the date of enactment of this Act, the Administrator shall fully implement the use of data communications. (2) Specific capabilities In carrying out subsection (a) and this subsection, the Administrator shall prioritize the following data communications capabilities: (A) Ground-to-ground message exchange for surface aircraft operations and runway safety at airports. (B) Automated message generation and receipt. (C) Message routing and transmission. (D) Direct communications with aircraft avionics. (E) Implementation of data communications at all Air Route Traffic Control Centers. (F) The Future Air Navigation System. (e) Terminal flight data manager and other systems (1) Terminal flight data manager Not later than 4 years after the date of enactment of this Act, the Administrator shall install the Terminal Flight Data Manager system at not less than 89 airports in the United States based on the highest number of annual aircraft operations or a determination of operational need and the impact of installation and deployment on the national airspace system. (2) Electronic flight strips At a minimum, the Administrator shall implement electronic flight strips at the air traffic control towers of airports described in paragraph