So I got myself confused again.
Doc 8168 says FMC/RNAV equipment can be used for conventional procedures provided that.....
Now my question is, what is the use of RNAV overlays then?
If I can simply use my RNAV equipment on every conventional procedure what makes overlays so different? They have the same requirements but are only allowed when published
From supplement Garmin GNS 430W:
Accomplishment of an ILS, LOC, LOC-BC, LDA, SDF, MLS, VOR approach, or any other type of approach not approved for GPS overlay, is not authorized with GPS navigation guidance
Is this:
-EASA: You can do it
-Garmin supplement: nope sorry, you cant unless an overlay is published
???