# § 47175. Definitions
In this subchapter, the following definitions apply:
**(1)** **Airport capacity enhancement project.—** The term “airport capacity enhancement project” means—
**(A)** a project for construction or extension of a runway, including any land acquisition, taxiway, or safety area associated with the runway or runway extension; or
**(B)** such other airport development projects as the Secretary may designate as facilitating a reduction in air traffic congestion and delays.
**(2)** **Airport sponsor.—** The term “airport sponsor” has the meaning given the term “sponsor” under section 47102.
**(3)** **Aviation safety project.—** The term “aviation safety project” means an aviation project that—
**(A)** has as its primary purpose reducing the risk of injury to persons or damage to aircraft and property, as determined by the Administrator;
**(B)** is needed to respond to a recommendation from the National Transportation Safety Board, as determined by the Administrator; or
**(C)** is necessary for an airport to comply with part 139 of title 14, Code of Federal Regulations (relating to airport certification).
**(4)** **Congested airport.—** The term “congested airport” means an airport that accounted for at least 1 percent of all delayed aircraft operations in the United States in the most recent year for which such data is available and an airport listed in table 1 of the Federal Aviation Administration’s Airport Capacity Benchmark Report 2004 or any successor report.
**(5)** **Federal agency.—** The term “Federal agency” means a department or agency of the United States Government.
**(6)** **General aviation airport construction or improvement project.—** The term “general aviation airport construction or improvement project” means—
**(A)** a project for the construction or extension of a runway, including any land acquisition, helipad, taxiway, safety area, apron, or navigational aids associated with the runway or runway extension, at a general aviation airport, a reliever airport, or a commercial service airport that is not a primary airport (as such terms are defined in section 47102); and
**(B)** any other airport development project that the Secretary designates as facilitating aviation capacity building projects at a general aviation airport.
**(7)** **Joint use airport.—** The term “joint use airport” means an airport owned by the Department of Defense, at which both military and civilian aircraft make shared use of the airfield.
**(8)** **Terminal development.—** The term “terminal development” has the meaning given such term in section 47102.
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**Source Credit**: (Added Pub. L. 108–176, title III, § 304(a), Dec. 12, 2003, 117 Stat. 2538; amended Pub. L. 112–95, title I, § 152(g), Feb. 14, 2012, 126 Stat. 34; Pub. L. 115–254, div. B, title I, § 191(b), Oct. 5, 2018, 132 Stat. 3239; Pub. L. 118–63, title VII, § 784, May 16, 2024, 138 Stat. 1313.)
## Editorial Notes
### Amendments
2024—Par. (1). , redesignated par. (3) as (1). Former par. (1) redesignated (2).
Par. (2). , redesignated par. (1) as (2). Former par. (2) redesignated (4).
Par. (3). , redesignated par. (4) as (3). Former par. (3) redesignated (1).
Par. (3)(A). , substituted “or” for “and”.
Par. (4). , redesignated par. (2) as (4). Former par. (4) redesignated (3).
Par. (4)(A). , struck out “and” at end.
Par. (4)(B), (C). , struck out subpar. (B) designation and redesignated cls. (i) and (ii) of former subpar. (B) as subpars. (B) and (C), respectively, of par. (4).
Par. (5). , redesignated par. (6) as (5). Former par. (5) struck out.
, struck out par. (5). Text read as follows: “The term ‘aviation security project’ means a security project at an airport required by the Department of Homeland Security.”
Pars. (6), (8). , (5), added par. (8) and redesignated former par. (8) as (6). Former par. (6) redesignated (5).
2018—Par. (8). added par. (8).
2012—Par. (2). , substituted “2004 or any successor report” for “2001”.
Par. (7). , added par. (7).
## Statutory Notes and Related Subsidiaries
### Effective Date
Section applicable only to fiscal years beginning after , except as otherwise specifically provided, see , set out an Effective Date of 2003 Amendment note under .