From CAAP 178-1(2)
"however the people at CASA appear to make out that LNAV+V does not improve safety over the existing RNAV, and it is really required to be Baro-VNAV". Please provide evidence of this... The way the CAAP reads is that you can use VNAV but you just need to monitor your descent profile to ensure you don't descend below a limiting altitude.
Extract from the CAAP paragraph 4.4.5 sates: "Some non-APV (NPA) avionics have a VNAV function that displays the vertical path in an ILS-like fashion. In these instances the vertical information is simply a mechanised representation of the designed approach path angle and is not linked to any external vertical navigation source and does not indicate the aircraft’s true relationship with the ground. If the approach chart line of minima indicates S-I or LNAV, then any VNAV indication provided by the avionics is advisory only. If this type of vertical advisory information is used, the pilot is responsible to ensure that the minimum segment altitudes published on the approach chart are adhered to.".