But the EPA does regulate aircraft emissions. You can see the regulations on their website: https://www.epa.gov/regulations-emissions-vehicles-and-engines/regul

But the EPA does regulate aircraft emissions. You can see the regulations on their website: https://www.epa.gov/regulations-emissions-vehicles-and-engines/regulations-emissions-aircraft https://www.epa.gov/regulations-emissions-vehicles-and-engin...