Air Defense Identification Zone
Air Defense Identification Zone (ADIZ) means an area of airspace over land or water, in which the ready identification, location, and control of all aircraft (except Department of Defense and law enforcement aircraft) is required in the interest of national security.
Conducting operations in the ADIZ requires:
- A Mode C transponder
- Two-way radio contract with the appropriate facility
- An IFR or DFVR flight plan
Land-based ADIZ
Land-Based ADIZ are activated and deactivated over U.S. metropolitan areas as needed by NOTAM.