I was looking at this approach plate for my home field
http://www.myairplane.com/databases/...l/ELD_ir22.pdf
And the ILS plate is marked ADF required? Why is that?

Looks like the NDB is part of the missed approach. You still don't need
an ADF, but only IF you have a /G approved GPS. (Though, you would still
need an ADF if this was an IFR alternate. For alternates - even if /G -
you need to have all the 'steam guage' equipment required for the
approach.

Scott