NPIAS 2023 2027 Appendix C

National Plan of Integrated Airport Systems (2023-2027) 1 APPENDIX C: STATUTORY AND POLICY DEFINITIONS; DATA SOURCES; AND NPIAS PROCESS STATUTORY DEFINITIONS Statutory Definition and Airports Meeting Definition Criteria Also referred to as: Commercial Service Publicly owned airports with at least 2,500 annual enplanements and scheduled air carrier service (49 U.S.C. § 47102(7)). ─ Large Hub Receives 1 percent or more of the annual U.S. commercial enplanements Primary ─ Medium Hub Receives 0.25 to 1.0 percent of the annual U.S. commercial enplanements Primary ─ Small Hub Receives 0.05 to 0.25 percent of the annual U.S. commercial enplanements Primary ─ Nonhub Receives less than 0.05 percent but more than 10,000 of the annual U.S. commercial enplanements Primary 383 Primary Airports ─ Nonprimary Commercial Service, Nonhub Also referred to as nonhub nonprimary, these airports have scheduled passenger service and between 2,500 and 10,000 annual enplanements. Nonprimary Reliever An airport designated by the Secretary of Transportation to relieve congestion at a commercial service airport and to provide more general aviation access to the overall community (49 U.S.C. § 47102(22)). Nonprimary General Aviation A public airport that does not have scheduled service or has scheduled service with less than 2,500 passenger boardings each year (49 U.S.C. § 47102(8)). Nonprimary Nonprimary airports were established for the distribution of nonprimary apportionments (49 U.S.C. § 47114(c)(3)(A)). Included in this category are the nonprimary commercial service, reliever, and general aviation airports. Nonprimary airports are identified with a role in the national airport system based on their activity as shown…
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