; and (2) by adding at the end the following: (9) Sunset of air traffic advisory role Beginning on the date of transfer (as defined in section 90101(a)), the Council shall not develop or submit comments, recommended modifications, or dissenting views directly regarding the American Air Navigation Services Corporation or air traffic services. . (b) Chief Operating Officer Section 106(r) of title 49, United States Code, is amended by adding at the end the following: (6) Sunset The position of Chief Operating Officer shall terminate and this subsection shall cease to be effective beginning on the date of transfer (as defined in section 90101(a)). . (c) Chief NextGen Officer Section 106(s) of title 49, United States Code, is amended by adding at the end the following: (8) Sunset The position of Chief NextGen Officer shall terminate and this subsection shall cease to be effective beginning on the date of transfer (as defined in section 90101(a)). . 223. Role of Administrator Section 40103(b) of title 49, United States Code, is amended— (1) in paragraph (1) by striking The Administrator each place it appears and inserting Before the date of transfer (as defined in section 90101(a)), the Administrator ; (2) by striking paragraph (2) and inserting the following: (2) The Administrator shall— (A) before the date of transfer (as defined in section 90101(a)), prescribe air traffic regulations on the flight of aircraft (including regulations on safe altitudes) for— (i) navigating, protecting, and identifying aircraft; (ii) protecting individuals and property on the ground; (iii) using the navigable airspace efficiently; and (iv) preventing collisions between aircraft, between aircraft and land or water vehicles, and between aircraft and airborne objects; and (B) on and after the date of transfer (as defined in section 90101(a)), prescribe safety regulations on the flight of aircraft (including regulations on safe altitudes) for— (i) navigating, protecting, and identifying aircraft