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Regulations for Emissions from Vehicles and Engines
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Petitions and EPA Response Memorandums related to Lead Emissions from Aircraft

Related Topics
  • Regulations for lead emissions from aircraft
  • EPA’s Data and Analysis of Piston-engine Aircraft Emissions of Lead at U.S. Airports
  • Lead air pollution
  • Advance notice of proposed rulemaking and related materials on lead emissions from piston-engine aircraft using leaded aviation gasoline

EPA has actively engaged in the investigation of emissions of lead from piston-engine aircraft operating on leaded fuel and the impact of these emissions on lead air pollution. The EPA has completed this investigation and now intends to develop a proposal under the Clean Air Act regarding whether lead emissions from piston-engine aircraft cause or contribute to air pollution which may reasonably be anticipated to endanger public health or welfare. For convenience, we refer to this action collectively as the “endangerment finding.”

We are currently planning to issue a proposed endangerment finding in 2022. The proposed finding will undergo public notice and comment. After evaluating comments on the proposal, we plan to issue any final endangerment finding in 2023.

Below you can find EPA’s response to petitions received on this issue.

  • EPA Response Memorandum to the 2021 Petition from Alaska Community Action on Toxics, Center for Environmental Health, Friends of the Earth, Montgomery-Gibbs Environmental Coalition, Oregon Aviation Watch, the county of Santa Clara, the Town of Middleton (pdf) (2.05 MB, January 12, 2022)
  • Petition from Alaska Community Action on Toxics, Center for Environmental Health, Friends of the Earth, Montgomery-Gibbs Environmental Coalition, Oregon Aviation Watch, the County of Santa Clara, and the Town of Middleton (pdf) (1.01 MB, October 2021)
  • EPA Response Memorandum to the 2014 Petition from Friends of the Earth, Physicians for Social Responsibility, and Oregon Aviation Watch Regarding Lead Emissions from Piston-Engine Aircraft (pdf) (643.02 KB, January 2015)
  • Petition from Friends of the Earth, Physicians for Social Responsibility, and Oregon Aviation Watch (pdf) (269.58 KB, April 2014)
  • EPA Response Memorandum to the 2006 Petition from Friends of the Earth Regarding Lead Emissions from Piston-Engine Aircraft (pdf) (9.96 MB, July 2012)
  • Petition from Friends of the Earth (pdf) (303.67 KB, October 2006)
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Last updated on January 12, 2022
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