What is the minimum flight visibility required for special VFR flight in Class D airspace at night?

In Class D airspace, the regulations for Special VFR (SVFR) flights at night specify that the aircraft must be equipped for instrument flight. This requirement ensures that, during nighttime operations, the pilot can safely navigate using instrument procedures, as visibility may be limited due to reduced light conditions.

While visibility is an important consideration during SVFR flight, particularly during the day when a minimum of 1 statute mile is required, the distinction at night lies in the necessity of being equipped for instrument flight. This regulation is crucial because flying at night introduces additional risks, and having the appropriate instrumentation enhances the pilot's ability to maintain control and situational awareness, especially in the event of unexpected weather changes or navigation challenges.

In contrast, other options pertain to different aspects of flight regulations or conditions that do not specifically address the minimum requirements for special VFR at night in Class D airspace.