The Center for Biological Diversity and Friends of the Earth, represented by Earthjustice, sent legal notice to the Environmental Protection Agency (EPA) highlighting that pollution from aircraft is rising steeply and that the EPA is skirting its duty to implement a reduction plan. Planes are already the third-largest source of transportation-related greenhouse emissions, and the industry is expected to generate 43 metric gigatons of CO2 through 2050.

In 2016, the EPA determined that aircraft pollution drives climate change and endangers public health and welfare. That determination requires officials to set aviation emission limits, but three years later, the Trump administration has yet to act.

“The Trump administration’s refusal to curb plane pollution is fueling the climate crisis,” said Clare Lakewood, climate legal director at the Center for Biological Diversity. “Airplane pollution is increasing at really worrying rates, but the EPA just keeps refusing to address this skyrocketing threat to our rapidly warming planet. We are taking action to make sure that the agency complies with its legal obligations, because there is just no time left for foot-dragging.”

“The Clean Air Act requires that the Trump administration take action on greenhouse gases from aircraft,” said Hallie Templeton, interim legal director for Friends of the Earth. “It’s catastrophic that the administration has deferred their plan for over a decade on such a pressing matter. The court must put the law above the politics of climate change-denial by requiring the agency to curb dirty greenhouse gas emissions from aviation.”

Flights departing from airports in the United States and its territories are responsible for almost one-quarter of global passenger transport-related carbon emissions. Yet former EPA Administrator Scott Pruitt failed to release a planned carbon-emissions reduction requirement for jet engines in new plane models. In 2019, the EPA announced it would release a proposed rule on aircraft greenhouse emissions by September, but failed to do so.

In 2010, the Center, Friends of the Earth and other organizations represented by Earthjustice sued EPA to force the agency to set greenhouse pollution standards for airplanes. A judge ruled that the EPA is required to address aviation emissions under the Clean Air Act.

“This letter puts EPA on notice that their job isn’t done when it comes to pollution from aircraft,” said Sarah Burt, staff attorney at Earthjustice. “Four years after concluding that aircraft are endangering Americans’ health and contributing to the climate crisis, it is past time for common-sense steps to reduce this source of pollution.” 

Read the notice of intent.