Originally Posted by
tebak41732
I should clarify no plate that I can find says that you can use the GPS in lieu of the DME when you are referencing distance from the ILS. Using the example of Avalon, you can reference the point AV but not the point IAV using GPS, and every other plate that I've looked at in Aus has the same thing.
This
could be due to the fact there can be a significant distance between the ILS/LOC reference point and the “co-located” DME reference point (e.g. ICN at YBCS shown below).
I don’t have access to a GNSS at the moment (and like a lot of others, not sure when I will again) but I don’t know if you input the waypoint ICN if it gives you the option to select between the ICN/LOC or the ICN/DME waypoints like it does when you type input something like CS and it gives choices of NDB, VOR.