Substitute DME for GPS?

Some certifiec IFR approach GPS units don't contain the localizer as a
waypoint, so you can't get the LOC distance (required for some LOC/ILS
approaches) directly.

"C J Campbell" wrote in message
...

"Thomas Borchert" wrote in message
...
Hi all,

a question that has probably been asked before, but I couldn't find it
in Google:

Is it allowed to use an IFR-approach-certified GPS instead of a DME in
a LOC-DME or VOR-DME approach that does not have a GPS-overlay?


I have never seen an approach certified GPS that did not have all the
intermediate waypoints for flying such an approach stored in its database.
Instead of your having to figure out that XYZZY is 5 DME from the airport,
the GPS should be giving you distance to XYZZY directly, automatically
cycling to the next waypoint upon reaching XYZZY. At least, that is what
the
Garmin and Bendix-King GPSs that I am familiar with do.

AIM does say that approach certified GPS may be used in lieu of DME for
approaches.