Aircraft Engines - Supplemental Information Related to Exhaust Emissions (Renewal)

This information collection is being conducted by the Environmental Protection Agency's (EPAs) Office of Air and Radiation (OAR) pursuant to section 114 of the Clean Air Act, as amended (CAA or the Act) to assist the Administrator of EPA in developing emissions standards and/or to inform future policy making decisions for aircraft gas turbine engines pursuant to section 231 of the Act. Under CAA section 231, the EPA is responsible for establishing standards for emissions from aircraft engines, and under CAA section 232, the Federal Aviation Administration (FAA) is responsible for enforcing these standards. The EPA and the FAA traditionally work within the standard-setting process of the International Civil Aviation Organization (ICAO) to establish international emission standards and related requirements, which individual nations later adopt into domestic law in fulfillment of their obligations under the Convention on International Civil Aviation (Chicago Convention). Historically, international emission standards have first been adopted by ICAO, and subsequently the EPA has initiated rulemakings under CAA section 231 to establish domestic standards that are at least as stringent as ICAOs standards.

The latest form for Aircraft Engines - Supplemental Information Related to Exhaust Emissions (Renewal) expires 2026-04-30 and can be found here.