What defines a Warning area?

• A. Areas That Extend Outward from 3 Nautical Miles Off the US Coast
• B. Areas Within US Land Borders Where Weather Is Monitored
• C. Areas Where Only IFR Flight Is Permitted
• D. Areas Located Entirely Within State Boundaries

Answer: (A)

Warning areas are parts of the airspace where activities that could be hazardous to nonparticipating aircraft, such as military training, may occur. They are defined as areas that extend outward from the coastline of the United States, starting from three nautical miles off the coast. In other words, these areas lie outside the U.S. domestic airspace and can cover international waters as well.

So this definition matches the statement that warning areas extend outward from three nautical miles off the U.S. coast. The other options describe scenarios that aren’t how warning areas are defined—inside U.S. land borders, restricted to IFR, or located entirely within state boundaries.