; and (2) operates in at 3 least suitable airports. (b) Duration of daily service The air traffic control services provided under the pilot program established under subsection (a) shall occur for at least 3 consecutive hours between 0600 and 2200 local time during each day of the pilot program. (c) Airport selection The Administrator shall designate airports for participation in the pilot program after consultation with aircraft operators, manufacturers, and airport sponsors. (d) Definitions (1) Certain NextGen avionics The term certain NextGen avionics means those avionics and related software designated by the Administrator after consultations with aircraft operators and manufacturers. (2) Preferential basis The term preferential basis means— (A) prioritizing aircraft equipped with certain NextGen avionics during a Ground Delay Program by assigning them fewer minutes of delay relative to other aircraft