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  2. Special use airspace - Wikipedia

    en.wikipedia.org/wiki/Special_use_airspace

    Map of special use airspace R2508 in the Mojave Desert, a Restricted Airspace. Special use airspace (SUA) is a type of special airspaces in the United States designated for operations of a nature such that limitations may be imposed on aircraft not participating in those operations. Often these operations are of a military nature.

  3. Airspace class (United States) - Wikipedia

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

    Pilots should be particularly alert when flying in these areas. All activity within an alert area must be conducted in accordance with CFRs, without waiver, and pilots of participating aircraft as well as pilots transiting the area must be equally responsible for collision avoidance. [13] Alert areas contain special hazards that pilots must ...

  4. Military operations area - Wikipedia

    en.wikipedia.org/wiki/Military_operations_area

    A MOA is a type of special use airspace (SUA), other than restricted airspace or prohibited airspace, where military operations are of a nature that justify limitations on aircraft not participating in those operations. The designation of SUA's identifies for other users the areas where military activity occurs, provides for segregation of that ...

  5. Airspace - Wikipedia

    en.wikipedia.org/wiki/Airspace

    Special use airspace or special area of operation (SAO) is the designation for airspace in which certain activities must be confined, or where limitations may be imposed on aircraft operations that are not part of those activities. Certain special use airspace areas can create limitations on the mixed use of airspace.

  6. Alert area - Wikipedia

    en.wikipedia.org/wiki/Alert_Area

    The yellow building is a mole hole, with the grey area being the Christmas tree. An Alert Area is a place of alert for military aircraft at United States Air Force bases. During the Cold War, bomber aircraft would be stationed on the Christmas trees within the area, ready to take off at moment's notice. Oftentimes, tanker aircraft would be ...

  7. A Chinese spy balloon, missiles and ‘UFOs’: What we’ve ...

    www.aol.com/news/chinese-spy-balloon-missiles...

    Not since a balloon crashed in Roswell, New Mexico have inflatable unmanned craft so dominated the American discourse. Alex Woodward and Andrew Feinberg sum up what we learned this week

  8. National Security Area - Wikipedia

    en.wikipedia.org/wiki/National_Security_Area

    NSAs can be temporarily converted into restricted airspace by NOTAMs. [1] 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.

  9. Prohibited airspace - Wikipedia

    en.wikipedia.org/wiki/Prohibited_airspace

    A prohibited airspace is an area (volume) of airspace within which flight of aircraft is not allowed, usually due to security concerns. It is one of many types of special use airspace designations and is depicted on aeronautical charts with the letter "P" followed by a serial number.