What is the minimum required visibility to enter Class D airspace under VFR?

The minimum required visibility to enter Class D airspace under VFR (Visual Flight Rules) is indeed 3 statute miles. This requirement ensures that pilots have sufficient visibility to see and avoid other aircraft while maneuvering in controlled airspace. In Class D airspace, which typically surrounds an airport with an operational control tower, maintaining adequate visibility is crucial for safety and to adhere to traffic patterns and other operational protocols.

Furthermore, along with the visibility requirement, pilots must also adhere to certain cloud clearance requirements in Class D airspace, which includes remaining clear of clouds to maintain visual separation from other aircraft. This combination of visibility and cloud clearance enhances situational awareness and safety within busy air traffic areas.