---
kind: "section"
citation: "49 U.S.C. § 47511"
title: "49"
title_heading: "Transportation"
number: "47511"
heading: "CLEEN engine and airframe technology partnership"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/49/47511"
units:
  - "Subtitle VII — Aviation Programs"
  - "Part B — Airport Development and Noise"
  - "Chapter 475 — Noise"
  - "Subchapter I — Noise Abatement"
---

# §47511. CLEEN engine and airframe technology partnership

- (a) **In General.—** The Administrator of the Federal Aviation Administration shall enter into a cost-sharing cooperative agreement, using a competitive process, with institutions, entities, or consortiums to carry out a program for the development, maturation, and testing of certifiable CLEEN [aircraft](/usc/49/40102.md?p=a-6), engine technologies, and jet fuels for civil airplanes.
- (b) **CLEEN Engine and Airframe Technology Defined.—** In this section, the term “CLEEN [aircraft](/usc/49/40102.md?p=a-6) and engine technology” means continuous lower energy, emissions, and noise [aircraft](/usc/49/40102.md?p=a-6) and engine technology.
- (c) **Performance Objective.—** The Administrator shall establish the performance objectives for the program in terms of the specific objectives to reduce fuel burn, emissions and noise.
- (d) **Selection.—** In carrying out the program, the Administrator may provide that not less than 2 of the cooperative agreements entered into under this section involve the participation of an entity that is a small business concern (as defined in section 3 of the Small Business Act ([15 U.S.C. 632](/usc/15/632.md))), provided that the submitted technology proposal of the entity meets, at a minimum, FAA Acquisition Management System requirements and requisite technology readiness levels for entry into the agreement, as determined by the Administrator.

## Source credit

(Added Pub. L. 115–254, div. B, title VII, § 743(a), Oct. 5, 2018, 132 Stat. 3413; amended Pub. L. 118–63, title X, § 1008, May 16, 2024, 138 Stat. 1389.)

## Notes

### Editorial Notes

### Amendments

2024—Subsec. (a). Pub. L. 118–63, § 1008(1), struck out “subsonic” after “fuels for civil”.

Subsec. (d). Pub. L. 118–63, § 1008(2), added subsec. (d).