of Congress quarterly briefings as to the progress made by the Administrator regarding implementation under the respective subsection for which the deadline will not be or was not met until such time as the Administrator has completed the required work under such subsection. (i) NextGen Advisory Committee consultation (1) In general The Administrator shall consult and task the NextGen Advisory Committee with providing recommendations on ways to expedite, prioritize, and fully implement the NextGen program to realize the operational benefits of such programs. (2) Considerations In providing recommendations under paragraph (1), the NextGen Advisory Committee shall consider— (A) air traffic throughput of the national airspace system