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.
Class C airspace is defined around airports of moderate importance; airports with regular commercial passenger jet service of 100 passengers per flight or more are typically Class C. The FAA requirements for Class C airspace status are an operational control tower, a radar-controlled approach system, and a minimum number of IFR approaches conducted per year.