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  2. Airspace class (United States) - Wikipedia

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

    Most airspace in the United States is class E. The airspace above FL600 is also class E. [10] No ATC clearance or radio communication is required for VFR flight in class E airspace. VFR visibility and cloud clearance requirements are the same as for class C and D airspaces when below 10,000 feet (3,000 m) MSL.

  3. NATO STANAG 4671 - Wikipedia

    en.wikipedia.org/wiki/NATO_STANAG_4671

    To prepare for the possible acquisition of a NATO-owned unmanned aerial vehicle (UAV), the level of airworthiness was essential so that industry could meet the alliance requirement. At the March 2005 FINAS meeting, France offered their national standard developed by Direction Générale de L'armement (DGA) to be an initial basis for a NATO ...

  4. National Airspace System - Wikipedia

    en.wikipedia.org/wiki/National_Airspace_System

    Pilots must also receive clearance to enter the Class B airspace but Visual Flight Rules may be used, unlike in Class A airspace. Class B airspace corresponds to the area formerly known as a Terminal Control Area or TCA. [6] Class C airspace reaches from the surface to 4,000 ft. AGL above the airport which it surrounds.

  5. 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 ]

  6. Visual meteorological conditions - Wikipedia

    en.wikipedia.org/wiki/Visual_meteorological...

    United States requirements for Visual Flight Rules [a] [6] Airspace class Time Altitude Surface to 1200 feet AGL [b] 1200 feet AGL to 10,000 feet MSL 1200 feet AGL and above 10,000 feet MSL; Visibility [c] Clearance from clouds [d] Visibility [c] Clearance from clouds [d] Visibility [c] Clearance from clouds [d] G Day 1 [e] clear of clouds [f] 1

  7. United States Department of Defense aerospace vehicle ...

    en.wikipedia.org/wiki/United_States_Department...

    Typical Vehicle Designation Stencil for a USAF aircraft. This one is on the port side of a T-33A under the canopy frame. Joint Regulation 4120.15E: Designating and Naming Military Aerospace Vehicles is the current system for designating all aircraft, helicopters, rockets, missiles, spacecraft, and other aerial vehicles in military use by the United States Armed Forces.

  8. Airspace class - Wikipedia

    en.wikipedia.org/wiki/Airspace_class

    All operations in US Class A airspace must be conducted under IFR. SVFR flight in Class A airspace is prohibited. Class B airspace is used to control the flow of traffic around major airports. The airspace is charted on a VFR sectional chart with a series of blue lines. Within these blue lines, the floor and the ceiling of the Class B airspace ...

  9. Special flight rules area - Wikipedia

    en.wikipedia.org/wiki/Special_Flight_Rules_Area

    In United States aviation, a special flight rules area (SFRA) is a region in which the normal regulations of flight do not apply in whole or in part, especially regulations concerning airspace classification, altitude, course, and speed restrictions, and the like.