Plain English Meaning
A label for chunks of sky that are set aside for particular activities — often military or hazardous — where regular flights may be limited, restricted, or prohibited.
Full Definition
A descriptor applied to portions of airspace that have been designated for activities which must be confined to specific areas, or where limitations are placed on aircraft that are not part of those activities. The term most commonly appears in the phrase 'special use airspace,' which includes prohibited areas, restricted areas, warning areas, military operations areas (MOAs), alert areas, and controlled firing areas.
Context Anchor
Seen in airspace study, sectional chart , and when identifying areas that may affect a planned .