What is the closest distance from IWA to the MAP if DME is not available?

To determine the closest distance from IWA (the Initial Waypoint of an approach procedure) to the MAP (Missed Approach Point) when DME is not available, it is important to reference the approach procedure details, specifically the altitude and distance requirements typically prescribed for such approaches.

In the context of many instrument approach procedures, a common safety standard dictates that, without DME, the distance to the MAP is often simplified to a known distance based on a standard approach profile. Many approaches may list a typical distance of 0.6 DME when DME guidance is not present, as this distance allows for a sufficient margin to ensure the aircraft is at a safe position to execute a missed approach while still being in the vicinity of the runway threshold.

This distance of 0.6 DME to the MAP is particularly relevant because it is specifically designed to provide a safeguard against premature initiation of a missed approach, allowing pilots to ensure that they are adequately positioned relative to the runway environment before making their decision.

Thus, this standard explanation supports the conclusion that the closest distance from IWA to the MAP, in the absence of DME, is accurately described as 0.6 DME.