Class D airspace surrounds airports that have an operating control tower and weather surfaces available, and are not associated with Class B or C airspace. Class D airspace normally extends from the surface up to and including 2,500 ft. AGL(Above Ground Level).
Operating Rules and Equipment Requirements
Two-way radio communications must be established and maintained with ATC prior to entering and while operating in Class D airspace.
Class D Airspace Depiction and Symolology
Class D airspace is depicted with a blue dashed line.
Class D altitudes are shown in blue letters, sometimes with a minus in front to indicate” from surface to, but not including”.
![Class D airspace Class D airspace](https://i0.wp.com/www.flynorthaero.com/wp-content/uploads/2023/02/Class-D-airspace.jpg?resize=616%2C427&ssl=1)