---
kind: "section"
citation: "49 U.S.C. § 47175"
title: "49"
title_heading: "Transportation"
number: "47175"
heading: "Definitions"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/49/47175"
units:
  - "Subtitle VII — Aviation Programs"
  - "Part B — Airport Development and Noise"
  - "Chapter 471 — Airport Development"
  - "Subchapter III — Aviation Development Streamlining"
---

# §47175. Definitions


In this subchapter, the following definitions apply:

- (1) **Airport capacity enhancement project.—** The term “airport capacity enhancement project” means—
  - (A) a [project](/usc/49/47102.md?p=17) 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](/usc/49/47102.md?p=3) [projects](/usc/49/47102.md?p=17) 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](/usc/49/47102.md?p=26)” under section 47102.
- (3) **Aviation safety project.—** The term “aviation safety project” means an aviation [project](/usc/49/47102.md?p=17) that—
  - (A) has as its primary purpose reducing the risk of injury to persons or damage to [aircraft](/usc/49/40102.md?p=a-6) 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](/usc/49/40102.md?p=a-9) to comply with part 139 of title 14, Code of Federal Regulations (relating to [airport](/usc/49/40102.md?p=a-9) certification).
- (4) **Congested airport.—** The term “congested airport” means an [airport](/usc/49/40102.md?p=a-9) that accounted for at least 1 percent of all delayed [aircraft](/usc/49/40102.md?p=a-6) operations in the [United States](/usc/49/40102.md?p=a-46) in the most recent year for which such data is available and an [airport](/usc/49/40102.md?p=a-9) listed in table 1 of the Federal Aviation Administration’s [Airport](/usc/49/40102.md?p=a-9) Capacity Benchmark Report 2004 or any successor report.
- (5) **Federal agency.—** The term “Federal agency” means a department or agency of the [United States](/usc/49/40102.md?p=a-46) Government.
- (6) **General aviation airport construction or improvement project.—** The term “general aviation airport construction or improvement project” means—
  - (A) a [project](/usc/49/47102.md?p=17) 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](/usc/49/47102.md?p=8), a [reliever airport](/usc/49/47102.md?p=23), or a [commercial service airport](/usc/49/47102.md?p=7) that is not a [primary airport](/usc/49/47102.md?p=16) (as such terms are defined in [section 47102](/usc/49/47102.md)); and
  - (B) any other [airport development](/usc/49/47102.md?p=3) [project](/usc/49/47102.md?p=17) that the Secretary designates as facilitating aviation capacity building [projects](/usc/49/47102.md?p=17) at a [general aviation airport](/usc/49/47102.md?p=8).
- (7) **Joint use airport.—** The term “joint use airport” means an [airport](/usc/49/40102.md?p=a-9) owned by the Department of Defense, at which both military and civilian [aircraft](/usc/49/40102.md?p=a-6) make shared use of the airfield.
- (8) **Terminal development.—** The term “[terminal development](/usc/49/47102.md?p=28)” has the meaning given such term in section 47102.

## 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.)

## Notes

### Editorial Notes

### Amendments

2024—Par. (1). Pub. L. 118–63, § 784(4), redesignated par. (3) as (1). Former par. (1) redesignated (2).

Par. (2). Pub. L. 118–63, § 784(4), redesignated par. (1) as (2). Former par. (2) redesignated (4).

Par. (3). Pub. L. 118–63, § 784(4), redesignated par. (4) as (3). Former par. (3) redesignated (1).

Par. (3)(A). Pub. L. 118–63, § 784(1), substituted “or” for “and”.

Par. (4). Pub. L. 118–63, § 784(4), redesignated par. (2) as (4). Former par. (4) redesignated (3).

Par. (4)(A). Pub. L. 118–63, § 784(2)(A), struck out “and” at end.

Par. (4)(B), (C). Pub. L. 118–63, § 784(2)(B), 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). Pub. L. 118–63, § 784(4), redesignated par. (6) as (5). Former par. (5) struck out.

Pub. L. 118–63, § 784(3), 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). Pub. L. 118–63, § 784(4), (5), added par. (8) and redesignated former par. (8) as (6). Former par. (6) redesignated (5).

2018—Par. (8). Pub. L. 115–254 added par. (8).

2012—Par. (2). Pub. L. 112–95, § 152(g)(1), substituted “2004 or any successor report” for “2001”.

Par. (7). Pub. L. 112–95, § 152(g)(2), added par. (7).

### Statutory Notes and Related Subsidiaries

### Effective Date

Section applicable only to fiscal years beginning after Sept. 30, 2003, except as otherwise specifically provided, see section 3 of Pub. L. 108–176, set out an Effective Date of 2003 Amendment note under section 106 of this title.