What is the term for special use airspace that is not charted?

The term for special use airspace that is not charted is a controlled firing area. Controlled firing areas are established to ensure that military operations, such as live weapons training, occur without posing a risk to aircraft operations. The key aspect of these areas is that they are not depicted on aeronautical charts, which means pilots may not be aware of their existence unless they receive direct information about them. Flight operations within a controlled firing area cease when air traffic is detected, allowing for safe passage through the vicinity.

In contrast, restricted areas, danger areas, and prohibited areas are all types of special use airspace that are charted and typically include specific restrictions or requirements for access that are known to pilots through published materials. This distinction highlights why controlled firing areas are unique in that they are primarily for temporary use and are not indicated on aeronautical charts.