PBN capability for IFR GA aircraft

[Peter Pan Pan]

Hi All,

Trying to decipher CAO 20.91 and have a question regarding PBN capability.
I normally enter B2S1 when operating under the IFR (dual TSO'ed C146 Garmin 430W's, ADSB out).
I see in AIP ENR 1.10-22 that:
C2 - RNAV 2 GNSS
O2 - Basic RNAV 1 GNSS
Are not yet used in Australia.

Does the 430W (or any TSO C145/146 GPS for that matter) have approval for anything better than RNAV5 GNSS outside australia?

Cheers
PPP

[UnderneathTheRadar]

With the same setup I use O2 S2 in PBN and RNP2 in the remarks. There was a thread here somewhere about it and nobody has complained or queried yet....

UTR

[Peter Pan Pan]

"O2" and "C2" have an asterisk in ENR 1.10-23 which says that it's not currently used for separation in Australian administered airspace. My interpretation is that you can still select these categories but it won't reduce the 5NM separation standard between ADSB identified aircraft.

[Jack Ranga]

I've got a slip of paper from Garmin that tells you what the capability of each of their GPS's is, can't remember where I got it from? I'll try find it.

[QFF]

On page 12 of the CASA PBN booklet published last year, it shows the deeming provisions for TSO 129 (Garmin 430) and 146 (Garmin 430W) GPS equipment which says:

RNAV 5 = GPS enroute = B2
RNAV 1 and RNAV 2 = GPS terminal = C2 & D2
RNP 2 = GPS enroute
RNP 1 = GPS terminal = O2
RNP Appr LNAV = GPS non precision approach = S1

So I put all of the above under PBN/, along with Nav/ RNP2 (why, I don't really know, that's what it says in the booklet)

I haven't been queried yet, so would appreciate any feedback as whether what I'm doing is correct or not.