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  2. Airspace class (United States) - Wikipedia

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

    A route with a 4-digit code contains no segment higher than 1,500 feet AGL, while a 3-digit code indicates that one or more segments of the route exist at altitudes higher than 1,500 feet AGL. [23] For example, the route VR1234 would indicate a VFR route exclusively below 1,500 feet AGL, while IR567 would indicate an IFR route with at least one ...

  3. Mode C veil - Wikipedia

    en.wikipedia.org/wiki/Mode_C_veil

    This airspace extends horizontally to a circle of 30 NM radius centered on the airport, and extends vertically from the surface up to 10,000 feet MSL. [1] The name refers to the mode of transponder operation which is required within this airspace — that is, with very limited exceptions, all aircraft operating within this airspace must have an ...

  4. 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]

  5. Visual meteorological conditions - Wikipedia

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

    For instance, in Australia, VMC minima outside controlled airspace are clear of cloud with 5,000 m visibility below 3,000 ft AMSL or 1,000 ft AGL (whichever is higher), and 1,000 ft vertical/1,500 m horizontal separation from cloud above these altitudes or in controlled airspace. Above 10,000 ft, 8,000 m visibility is required to maintain VMC.

  6. Airspace class - Wikipedia

    en.wikipedia.org/wiki/Airspace_class

    Class E airspace exists above Class G surface areas from 14,500 ft (4,400 m) MSL to 18,000 ft (5,500 m) MSL. Federal airways from 1,200 ft (370 m) AGL to 18,000 ft (5,500 m) MSL within 4 miles (6 km) of the centerline of the airway is designated Class E airspace. Airspace at any altitude over FL600 (60,000 ft; 18,300 m) (the ceiling of Class A ...

  7. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  8. Download, install, or uninstall AOL Desktop Gold - AOL Help

    help.aol.com/articles/aol-desktop-downloading...

    Double click the Install_AOL_Desktop icon. 4. Click Run. 5. Click Install Now. 6. Restart your computer to finish the installation. Uninstall Desktop Gold

  9. National Airspace System - Wikipedia

    en.wikipedia.org/wiki/National_Airspace_System

    Class B airspace extends from the surface up to 10,000 ft. AGL and is the area above and around the busiest airports (e.g., LAX, MIA, CVG) and is also heavily controlled. A side view of Class B airspace resembles an upside-down wedding cake with three layers becoming bigger toward the top.