A Metroplex is a geographic area covering several airports, serving major metropolitan areas and a diversity of aviation stakeholders such as NAS users, FAA, and other lines of business and airport operators. Congestion, airport activity in close geographical proximity, and other limiting factors such as environmental constraints combine to reduce efficiency in busy Metroplexes.

The National Environmental Policy Act of 1969 (NEPA) requires federal agencies to disclose to decision makers and the interested public a clear, accurate description of potential environmental impacts of proposed federal actions and reasonable alternatives to those actions.

Metroplex Airspace Locations:

• Atlanta
• Charlotte
• Cleveland-Detroit
• Denver
• Houston
• Las Vegas
• North Texas
• Northern California
• South Central Florida
• Southern California
• Washington, D.C.