What is the classification of the airspace directly over Addison Airport?

Addison Airport is classified as a Class D airspace, which typically surrounds airports that have an operational control tower. The vertical limits of Class D airspace generally extend from the surface up to a specified altitude, which can vary by location but usually is up to 2,500 feet above ground level or up to the overlying airspace's floor, except for where the airport has specific airspace limits defined in the relevant regulations or charts.

In this case, the statement mentions "up to but not including 3,000 feet MSL," which aligns with the characteristics of Class D airspace. The distinction here is that while Class D airspace may often extend to 2,500 feet or similarly defined limits, it does not go as high as 3,000 feet unless otherwise specified.

Class A airspace starts at 18,000 feet MSL and extends to the upper limits of controlled airspace, making it incompatible with what is true for Addison Airport. Class C airspace involves more complex air traffic and usually surrounds busier airports, but Addison Airport does not fit this classification. Class G airspace is uncontrolled and is typically found in areas outside of controlled airspace zones, which is not applicable when discussing an airport with