What element of a NOTAM specifies the area defined in a TFR?

The component of a NOTAM that delineates the area of a Temporary Flight Restriction (TFR) is primarily described using aerial coordinates. This involves specifying latitude and longitude points that create a geographic boundary for the airspace in which the TFR applies. By providing specific coordinates, pilots and other airspace users can understand exactly where the restrictions are in place, enabling them to navigate safely and comply with regulations.

Statute miles, flight levels, and geographical range do not specify the area in the same precise way. Statute miles may give some idea of the size of a restricted area, but it does not define its precise location. Flight levels indicate altitude, while geographical range might suggest an area but lacks the specificity needed for operational purposes in aviation. Therefore, aerial coordinates are essential for accurately defining the affected airspace for a TFR in a NOTAM.