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  2. National Security Area - Wikipedia

    en.wikipedia.org/wiki/National_Security_Area

    On VFR sectional charts, NSAs are delimited by a heavy dashed magenta border and a special notation. When not referring to aviation, a National Security Area is a designated area temporarily placed under the command of the National Nuclear Security Administration .

  3. Air Defense Identification Zone (North America) - Wikipedia

    en.wikipedia.org/wiki/Air_Defense_Identification...

    ADIZ boundaries for the United States and Canada as of 2018. ADIZ boundaries for Alaska. The Air Defense Identification Zone of North America is an air defense identification zone (ADIZ) that covers the airspace surrounding the United States and Canada – in which the ready identification, location, and control of civil aircraft over land or water is required in the interest of national ...

  4. Air defense identification zone - Wikipedia

    en.wikipedia.org/wiki/Air_defense_identification...

    An air defense identification zone (ADIZ) is a region of airspace in which a country tries to identify, locate, and control aircraft in the interest of national security. [1] It is declared unilaterally [ 2 ] and may extend beyond a country's territory to give the country more time to respond to possibly hostile aircraft. [ 3 ]

  5. Prohibited airspace - Wikipedia

    en.wikipedia.org/wiki/Prohibited_airspace

    Such areas are established for security or other reasons associated with the national welfare. These areas are published in the Federal Register and are depicted on aeronautical charts." Part of a terminal area chart, showing the prohibited/restricted airspace surrounding Camp David. Some prohibited airspace may be supplemented via NOTAMs.

  6. Airspace - Wikipedia

    en.wikipedia.org/wiki/Airspace

    Such areas are established for security or other reasons associated with the national welfare. Prohibited areas in the United States are published in the Federal Register and are depicted on aeronautical charts. The area is charted as a "P" followed by a number (e.g., P-49).

  7. Airspace class (United States) - Wikipedia

    en.wikipedia.org/wiki/Airspace_class_(United_States)

    There are areas where class E airspace begins at either the surface (SFC) or 700 AGL, these areas are used to transition between the terminal and en-route environments (around non-towered airports). These areas are designated on sectional charts. Most airspace in the United States is class E.

  8. Category:Air traffic control in the United States - Wikipedia

    en.wikipedia.org/wiki/Category:Air_traffic...

    National Security Area; New York Air Route Traffic Control Center; ... Sectional aeronautical chart; Security Control of Air Traffic and Air Navigation Aids;

  9. Sectional aeronautical chart - Wikipedia

    en.wikipedia.org/wiki/Sectional_aeronautical_chart

    The sectionals are complemented by terminal area charts (TACs) at 1:250,000 scale for the areas around major U.S. airports, and until 2016 by World Aeronautical Charts (WACs) at a scale of 1:1,000,000 for pilots of slower aircraft and aircraft at high altitude. [1] Since February 2021, the charts have been updated on a 56-day publication cycle. [2]