PBN and RNP

[QFF]

Can anybody help me shed some light on the relevance of PBN and RNP for the private operator like me? Especially in light of the changes to flight planning and notification systems next week.

Specifically - I have 2x Garmin GNS 430 and am current for RNAV approaches. Does that make me at least RNP 1 or even, heaven forbid, RNP 4 compliant?

Have had a quick flick through the various ACs and even the PBN manual but can't make head or tail of it as most of it appears to be slanted towards Boeings and Airbuses.

Is there a "RNP for Dummies" publication out there?

[NIK320]

From what I understand RNP x requires operational approval from CASA, hence is Airbus and Boeing oriented.

The NOTAM seems to cover what to do for GA ops.

"C114/12
FLIGHT PLANNING REQUIREMENTS
TO CORRECTLY DEPICT GNSS CAPABILITY FOR ENR AND APP APPLICATIONS AND
ENSURE CORRECT ATC DISPLAY UNTIL ATC SYSTEMS ARE UPGRADED IN APRIL
2013, AMEND AIP AL73 EFFECTIVE NOV 15 2012 AS FOLLOWS:
ENR 1.10 PARA 3.3.2
PILOTS ABLE TO USE GNSS SHOULD FLIGHT PLAN FOR THE FOLLOWING
NAVIGATION APPLICATIONS:
A. NIGHT VFR AREA NAVIGATION OR IFR AREA NAVIGATION SHOULD INSERT G
AND Z IN FIELD 10 AND EITHER NAV/GPSRNAV OR NAV/RNP2 GPSRNAV IN FIELD
18 OF THE FLIGHT NOTIFICATION FORM,
B. RNAV(GNSS) NON-PRECISION APPROACH (OR RNP APCH LNAV) SHOULD
INSERT: G AND R IN FIELD 10 AND PBN/S1 IN FIELD 18 OF THE FLIGHT
NOTIFICATION FORM
FROM 10 161400 TO 01 160500 EST"

[QFF]

Thanks Nik320.

So what is the difference between S1 and RNP2 in field 18? Just an approval from CASA?

I'd just like to understand what I'm putting in the flight plan...

[NIK320]

RNP2 indicates the aircraft can navigate en route to an accuracy of +/- 2nm 95% of the time. Based on AC 91U you require CASA approval for that one.

S1 indicates the aircraft is capable of conducting an RNAV NPA.

Based on that if you have RNAV NPA on your CIR then file G R Z for equip, NAV/GPSRNAV PBN/S1 in field 18.

[QFF]

That makes sense - thanks very much!

[Signature]

I believe you'd also require an independent RNAV system (IRS/INS) with position BIAS function. If you lose GPS integrity, you still need to ensure your ability to Nav out of, or into the safe lands...

I honestly don't believe RNP will exist anywhere other the FAR25 transport category AIrcraft.

[Turbine Overheat]

Try reading CAO 20.91
Your standing approvals for existing equipment are detailed there.

[737pnf]

I rang the horse today and he was available to direct me to the following:-
http://www.airservicesaustralia.com/wp-content/uploads/Flight-Planning-Guidance-Notes.pdf
ICAO Flight Planning Amendment 1 | Airservices (http://www.airservicesaustralia.com/projects/icao-flight-planning-amendment-1/)

[kalavo]

CAO 20.91 is the go to guide.

You haven't mentioned whether you have the TSO129 430s, or the TSO146 430Ws.

14.1 The operator of an Australian aircraft to whom paragraph 14.2 applies is deemed to hold a navigation authorisation for:
(a) RNAV 5; and
(b) RNAV 1 and RNAV 2; and
(c) RNP 2; and
(d) RNP 1; and
(e) RNP APCH-LNAV.
14.2 This paragraph applies to the operator of an aircraft that is equipped, in accordance with paragraph 14.4, with equipment that was installed in accordance with paragraph 14.5.
14.3 It is a condition of the navigation authorisation that the aircraft is flown by a pilot in accordance with paragraph 14.6.
14.4 The aircraft must be equipped with a GNSS stand-alone system with en route, terminal and NPA capability having TSO-C129a or ETSO-C129a authorisation for Class A1.
14.5 The equipment must have been installed:
(a) if installed before 13 April 2005 — in accordance with CAAP 35-1; or
(b) if installed on or after 13 April 2005 — in accordance with CASA AC 21‑36 ( ).

You do NOT require an IRS/INS, you simply file that you do not have one. (ie C2 rather than C1 for RNAV2 approval). Remember this is 95% of the time, not 99.9999%... if you lose RAIM you are required to let ATC know as previously.

There are other limitations and requirements you need to be aware of (ie simply because as an operator with a correctly installed 129 unit, doesn't mean you tick the other boxes). Some items to consider (after reading 20.91) are crew training, system availability (how many satellites are in the GPS constellation at the moment), reporting required (CASA/ATSB) when intentionally or unintentionally deviating off track.

According to the CAO there are also some new restrictions relating to RNP APCH vs the previous RNAV/GNSS.

As always, accept PPRUNE advice with a grain of salt.