IFR GPS replace DME / ADF?

Bob Noel wrote:

In article JwR8g.176188$bm6.47778@fed1read04, Sam Spade
wrote:


As for RNAV, you have to be careful using that word (or acronym) today,
because it is used to indicate older integrator boxes (KNS-80 etc) but
also applies to the latest GPS applications. The international B-RNAV and
P-RNAV standards do not preclude any of the navigational sources (VOR/DME
GPS) but specify performance standards. A GPS approach, even with WAAS or
LAAS is an RNAV approach by definition.

GF


Then, there is RNP.


Which is sometimes considered different than RNP RNAV (e.g., RNP with
containment integrity).


How about RNAV (RNP) instrument approach procedure?