What have been the trends in aviation emissions? 

Technological advancement has reduced aircraft fuel consumption and emissions significantly over the last 30 years and this is expected to continue in the future. 

The industry’s historical transition from piston engines to modern high-bypass turbofans resulted in major advancements in energy efficiency and environmental performance. 

During this same era, the industry developed and deployed new, lightweight, high-strength materials, automated navigational, operational, and engine control systems, and employed vast new computational capabilities to improve aerodynamic efficiency and integrate highly complex operational strategies. 

• What emissions come from aviation?

• What determines aviation emissions?

• What have been the trends in aviation emissions?

• How do aviation emissions compare to general trends in local air pollutants?

• How do aviation local emissions compare to other transportation sources?

• Can a comparison be made between aviation emissions and non-transportation sources?

• What role does aviation emissions play with regard to greenhouse gas issues?

• How do aviation’s greenhouse gas emissions compare to other transportation sources?

• How are aviation emissions regulated?

• What is being done today to reduce aviation emissions?

• What steps are being taken to reduce aviation emissions in the longer-term?