Description
The U.S. Environmental Protection Agency (EPA) is proposing particulate matter (PM) emission standards and test procedures applicable to aircraft engines used in subsonic jet airplanes with an output greater than 26.7 kilonewtons (6,000 pounds thrust) to replace the existing smoke standard. These proposed standards would apply to both new type design and in production engines starting on Jan. 1, 2023. The EPA is also proposing to apply the smoke number standards to engines less than or equal to 26.7 kilonewtons. Comments on this proposal must be received by April 4, 2022. This proposal is separate from the July 2020 EPA proposal to require emissions standards on large jets and turboprops.
UUID
197