In article ,
Peter Clark wrote:

What he said, squared. About the only thing I can think of that you can do
with a DME that you can't with a terminal-certified GPS is use it to fly an
ILS-DME (because you don't have the location of the ILS DME ground station
in the GPS database).

FWIW, the KLN94 has the I-xxx stations in the database for doing DME
to ILS stations.

Cool, I didn't know that. I wonder why those fixes were dropped from the
databases of more modern units? It seems like such an obvious and useful
thing to have them in there.