EPA to regulate climate-warming airliner pollution

The government has found that jet engine exhaust is adding to climate change and endangering human health, and needs to be regulated. The Environmental Protection Agency announced Monday that it will use its authority under the Clean Air Act to impose limits on aircraft emissions.

Jet engines spew significant amounts of greenhouse gases, including carbon dioxide and methane, into the upper atmosphere, where they trap heat from the sun. But proposed rules such as imposing fuelefficiency standards have faced stiff opposition from aircraft makers and commercial airlines.

Aircraft emissions were not addressed as part of the landmark global climate agreement agreed to in Paris in December.

“Addressing pollution from aircraft is an important element of US efforts to address climate change,” said Janet McCabe, EPA’s acting assistant administrator for air and radiation. She said aircraft are the third largest contributor to greenhouse gas emissions in the US transportation sector, and that is expected to increase. Cars and trucks already are regulated.

The EPA’s findings do not apply to small piston-engine planes or to military aircraft. A UN panel in February recommended new emissions standards for international flights that require an average 4 percent reduction in fuel consumption during the cruising phase of flight. (AP)