What is one of the criteria for airports to be eligible for funding under the NPIAS?

Being publicly accessible is a key criterion for airports seeking eligibility for funding under the National Plan of Integrated Airport Systems (NPIAS). This requirement ensures that airports are available for use by the general public, which aligns with the goal of promoting a transportation system that serves the needs of all travelers. Public accessibility allows airports to receive federal funds to enhance infrastructure and services, thereby supporting broader regional and national aviation interests.

The criteria for being publicly accessible indicate that airports should provide services to the traveling public rather than being limited to particular user groups or restricted to private or military flights. This aspect is crucial for federal funding eligibility, ensuring that resources are directed towards facilities that contribute to the national transportation network.

Other criteria, such as minimum enplanements or location, can vary but don't encompass the fundamental public service expectation of the NPIAS funding framework. Military-only operations are ineligible since NPIAS funding is aimed at addressing the broader commercial and public aviation needs. Hence, being publicly accessible unequivocally reinforces the premise of inclusivity and utility in federal funding policies.