AEDT Guidance

The Aviation Environmental Design Tool Version 2b (AEDT 2b) was released on May 29, 2015, replacing the Integrated Noise Model (single airport noise analysis), the Emissions Dispersion Modeling System (single airport emissions analysis), and AEDT 2a (regional noise analysis) as the required tool for noise, fuel burn, and emissions modeling of FAA actions. AEDT 2b applies to analyses initiated after May 29, 2015. Consistent with current FAA policy and practice, the use of AEDT 2b is not required for projects whose analysis began before this effective date. Guidance is provided below on using both versions of AEDT to comply with NEPA requirements.


Guidance on Categorical Exclusions

Aerobatic Practice Areas

Legislative Categorical Exclusion