In May 2015, which software system replaced the INM and models aircraft performance to estimate fuel consumption, emissions, noise, and air quality?

• A. Aviation Environmental Design Tool (AEDT)
• B. Aircraft Emissions and Design Tool (AEDT)
• C. Airspace Environmental Modeling System (AEMS)
• D. Aviation Emissions Assessment Program (AEAP)

Answer: (A)

AEDT, the Aviation Environmental Design Tool, is the software designed to replace INM and the older aircraft performance models for estimating fuel consumption, emissions, noise, and air quality. It provides a single, integrated framework that combines aircraft performance with environmental impact calculations, allowing analysts to assess fuel burn, various emissions, noise footprints, and air-quality effects across different flight profiles and airport scenarios. This consolidation improves consistency and comparability across analyses and is the reason it became the standard tool around May 2015. The other names aren’t the official tool used for this purpose.