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  2. National Airspace System - Wikipedia

    en.wikipedia.org/wiki/National_Airspace_System

    A side view of Class B airspace resembles an upside-down wedding cake with three layers becoming bigger toward the top. Class B's layers are designed individually to meet the needs of the airport they overlay. Pilots must also receive clearance to enter the Class B airspace but Visual Flight Rules may be used, unlike in Class A airspace. Class ...

  3. Airspace class (United States) - Wikipedia

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

    Class D airspace is generally cylindrical in form and normally extends from the surface to 2,500 feet (760 m) above the ground. Airspace within the given radius, but in surrounding class C or class B airspace, is excluded. Class D airspace reverts to class E or G during hours when the tower is closed, or under other special conditions. [9]

  4. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    Visual flight rules (VFR) flight standard squawk code used in North American airspace when no other has been assigned or is applicable. [7] [3] 1201 US: Assigned via FAR 93.95 for use by VFR aircraft in the immediate vicinity of LAX. [3] US (Visual flight rules (VFR) glider operations for gliders not in contact with ATC, through February 2012 ...

  5. Nevada Test and Training Range - Wikipedia

    en.wikipedia.org/wiki/Nevada_Test_and_Training_Range

    In addition to Nellis AFB, areas outside of the current NTTR land area are used for related activities, e.g., about 1,107 sq mi (2,870 km 2) of the former military range land (relinquished 1942, e.g. ranges 46–56, [10] and c. 1953) is under the Nellis "Area A" airspace that is a Military Operations Area (MOA). [11]

  6. List of Class C airports in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_Class_C_airports...

    Class C is a class of airspace in the United States which follows International Civil Aviation Organization (ICAO) air space designation. Class C airspace areas are designed to improve aviation safety by reducing the risk of mid-air collisions in the terminal area and enhance the management of air traffic operations therein. [1]

  7. Key US Air Force base closes airspace amid drone sightings - AOL

    www.aol.com/key-us-air-force-closes-070045875.html

    Drone activity caused officials to close airspace over one of the United States’ most critical Air Force bases for almost four hours late Friday and early Saturday, according to a base ...

  8. Prohibited airspace - Wikipedia

    en.wikipedia.org/wiki/Prohibited_airspace

    Some prohibited airspace may be supplemented via NOTAMs. For example, Prohibited Area 40 (P-40) and Restricted Area 4009 (R4009) often have additional restricted airspace added via a NOTAM when the president of the United States visits Camp David in Maryland, while normally the airspace outside of P-40 and R4009 is not prohibited/restricted.

  9. List of United States Army Field Manuals - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States_Army...

    This publication supersedes FM 100–1, 14 June 1994. Eric K. Shinseki: INACTIVE: FM 100–1: FM 100–1, The Army: 14 June 1994 [7] This publication supersedes FM 100–1, 10 December 1991. Gordon R. Sullivan: INACTIVE: FM 100–1: FM 100–1, The Army: 10 December 1991 [8] This publication supersedes FM 100–1, 29 August 1986. Gordon R ...