U.S. EPA Finalizes Greenhouse Gas Emissions Regulations for Aircraft Engines
Environmental, Energy, & Climate Change Law and Regulation Reporter, Volume 1, Number 5
On December 23, 2020, the U.S. Environmental Protection Agency (EPA) issued a final rule adopting greenhouse gas (GHG) emission standards for commercial aircraft—the first time EPA has ever regulated the largest GHG emission source in the United States transportation sector. See, 86 Fed. Reg. 2136 (Jan. 11, 2021). According to EPA, GHGs from aircraft engines comprise 10 percent of the total emissions from the transportation sector and 3 percent of the United States’ total GHG emissions. The new rule adopts the GHG standard set by the International Civil Aviation Organization (ICAO) in 2017 by setting a standard for fuel efficiency for certain aircraft engines.
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