What is the standard visibility requirement for a precision approach under IFR?

The standard visibility requirement for a precision approach under IFR (Instrument Flight Rules) is indeed 1 statute mile. This requirement is set to ensure that pilots have sufficient visual reference to perform a safe landing when utilizing precision navigation systems like the Instrument Landing System (ILS).

Precision approaches are designed to provide pilots with both lateral and vertical guidance, enhancing landing safety when visibility is limited. Having a visibility requirement of 1 statute mile ensures that pilots can reliably see the runway and any surrounding traffic or obstacles as they execute the final approach and landing.

While there might be different visibility requirements for non-precision approaches or specific types of operations within certain categories of airspace, the standard for precision approaches is firmly established at 1 statute mile, aligning with the guidelines provided by the FAA and other aviation regulatory bodies.