RNP APCH requires an RNP of 0.3 during the final approach segment thus making it RNP and not RNAV, correct? Highest RNAV = RNAV1 (terminal area).
This stuff confuses me...
From our manual:
RNP Approach (RNP APCH)
The PBN navigation specification RNP APCH is the official term for instrument approach procedures including the final approach segment. These procedures are often (and incorrectly) referred to as RNAV approaches, due to the (old) naming convention on Instrument Approach Charts (IAC), i.e. RNAV (GNSS) or RNAV (GPS) approaches. These procedures are gradually replaced by the new procedure name RNP RWY XX.