What altitude does Class D airspace generally start and stop at?

Class D airspace is typically designated around airports that have an operational control tower. It extends from the ground level up to a ceiling of 2,500 feet above ground level (AGL). This structure ensures that aircraft within this airspace can operate safely and in an organized manner, allowing for efficient management of traffic around busy airports.

The vertical limits of Class D airspace are designed to provide adequate separation from other airspace classes, while also facilitating the needs of commercial and general aviation aircraft that may be using the airport. By maintaining a starting point at ground level, it allows for all types of operations, from takeoffs and landings to surface movements of aircraft. The upper limit at 2,500 feet AGL provides controlled airspace for pilots flying within that range, without interfering with higher altitude operations in surrounding Class E airspace or other classifications.

This description aligns with the specific characteristics of Class D airspace as established in aviation regulations and helps pilots understand the operational environment surrounding airports classified under this airspace type.