What is the primary purpose of a Warning Area?

The primary purpose of a Warning Area is to alert pilots to possible hazards that may exist in that airspace. These areas are designated over coastal waters and may contain activities that pose risks to aircraft, such as military training exercises, missile testing, or other potentially hazardous operations. While pilots are not prohibited from entering a Warning Area, they should do so with caution and situational awareness, as the activities occurring within may present dangers.

In contrast to the other options, which refer to different types of airspace or specific uses, the focus of a Warning Area is on the potential for hazards in the airspace above or around it. This safety measure ensures that pilots remain informed about the unique risks that may be present while they navigate through or near these designated areas.