How should the visibility requirement be reported if RVR equipment is inoperative for an IAP that requires 2,400 RVR?

The visibility requirement for an Instrument Approach Procedure (IAP) that dictates a minimum of 2,400 RVR can still be represented through various means of reporting when RVR equipment is inoperative. In this instance, if the RVR equipment is non-functional, reporting visibility as 1/2 statute mile (SM) ground visibility is the correct approach.

This method is utilized because it provides a measurable and standardized reference for pilots to assess visibility conditions in terms of ground visibility rather than relying solely on RVR data, which may not be available. The conversion is based on established guidelines that equate specific visibility measurements, helping ensure that flight operations maintain safety standards even when certain equipment fails. By reporting visibility as 1/2 SM, it enables pilots to have a clear, comprehensible frame of reference in the absence of RVR data.