Mustang does VNAV
Hi Dick,
I was fortunate enough to do the Initial Mustang type rating in Wichita and I can confirm that the RNAV approaches with GBAS or SBAS can be flown all the way down to the MDA fully coupled in the Mustang, just like an ILS, but I think you know this. So we know that the aircraft and Garmin is capable. I was told that it was because there are few or no GBAS corrected approaches available to GA outside the USA that someone had instructed Jeppesen not to code Non Precision approaches with VNAV past the FAF. I doubt it was the manufacturer as Vertical profile is a great selling point. Maybe it was Garmin's lawyers.
I also fly Proline 21 equipped aircraft and I like you am very frustrated that VNAV down the approach is not available in Garmin equipped aircraft as it makes it so much safer. Forget about the chest beating going on about flying twin NDBs etc. Lets try to find out what the legal standpoint is with barometric coupling and hopefully we can make aviation in Australia a bit safer.
Groggy