CPAverify minimizes the need to check the website of each State Board of Accountancy individually to determine a CPA's license status. CPAverify, with support from participating State Boards of Accountancy, allows consumers the opportunity to check the status of multiple licenses a professional holds at one website.
Generally, if the airspace is not Class A, B, C, or D, and is controlled airspace, then it is Class E airspace. Class E airspace extends upward from either the surface or a designated altitude to the overlying or adjacent controlled airspace.
Airspace and Air Traffic Control. Â­The United States airspace is divided into 21 zones (centers), and each zone is divided into sectors. Also within each zone are portions of airspace, about 50 miles (80.5 km) in diameter, called TRACON (Terminal Radar Approach CONtrol) airspaces.