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Leaded Fuel | Hackaday
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https://www.epa.gov/regulations-emissions-vehicles-and-engines/proposed-finding-lead-emissions-aircraft-engines-0
Proposed Finding that Lead Emissions from Aircraft Engines That Operate on Leaded Fuel Cause or...
Mar 5, 2026 - On October 17, 2022, EPA issued a proposed determination that lead emissions from certain aircraft cause or contribute to lead air pollution which may...