{"id":59,"date":"2016-10-04T20:06:32","date_gmt":"2016-10-04T20:06:32","guid":{"rendered":"http:\/\/crp.trb.org\/acrp0331\/?page_id=59"},"modified":"2016-11-30T18:05:38","modified_gmt":"2016-11-30T18:05:38","slug":"airport-roles-according-to-npias","status":"publish","type":"page","link":"https:\/\/crp.trb.org\/acrpwebresource1\/airport-roles-according-to-npias\/","title":{"rendered":"Airport Roles According to NPIAS"},"content":{"rendered":"

Airport Roles According to NPIAS<\/span><\/h1>\n

The NPIAS<\/span> is updated and published by the FAA<\/span> every two years. This report uses predetermined evaluation criteria to identify airports that are of national importance to the air transportation system and inclusion in the NPIAS<\/span> makes an airport eligible for AIP<\/span> funding. The evaluation criteria consider important airport metrics such as commercial service enplanements, proximity to other airports and the number of based aircraft at an airport, making the NPIAS<\/span> an excellent resource when understanding the role of the airport. Identifying if an airport is included in the NPIAS<\/span>, followed by determining its classification within the NPIAS<\/span>, provides insight into what role an airport plays within the larger regional and national aviation context.<\/p>\n

As of January 2016, there are over 19,300 aviation facilities in the United States. However, almost three-quarters of these facilities are for private use only and not open to the general public, and therefore not eligible for the NPIAS<\/span>. Of the roughly 5,100 remaining eligible public-use airports and other aviation facilities, over 3,300 airports, heliports, and seaplane bases are identified in the most recent NPIAS<\/span>. A majority of the airports in the NPIAS<\/span> are publicly owned, while a small number of airports are privately owned, but open for public use, and therefore also included in the plan. To learn more about the criteria used to classify NPIAS<\/span> airports see the Changing NPIAS<\/span> Classification<\/a> section.<\/p>\n

The NPIAS<\/span> airports are generally categorized as either primary (commercial service) or nonprimary (GA<\/span>) airports based on the number of commercial service enplanements, number of based aircraft, location or proximity to other airports, or a combination of the three. All primary and commercial service airports are in the NPIAS<\/span>, while only select GA<\/span> airports are included. Although most of the annual enplanements occur at primary airports, these airports account for only a small portion of the overall airports in the NPIAS<\/span>. Out of the over 3,300 NPIAS<\/span> airports, just less than 400 airports are considered primary. The remainder of the airports are nonprimary and mainly serve GA<\/span> aircraft. Due to the large number of airports classified as GA<\/span>, the FAA<\/span> in 2012 and 2014 developed two additional reports to further classify these airports. See General Aviation Airports: National Assets<\/a> for further information.<\/p>\n

Click below to read about each category of NPIAS<\/span> airports:<\/p>\n