Advanced-RNP

Jack of all Trades

Master of None

1 of 13 IFPD Workshop – Wellington, 20 Nov 2014 – Prepared & presented by P Haubourdin

Background

• Under development since 2001 in Europe

• Successor to P-RNAV

• First mention of A-RNP by ICAO in 3rd edition of PBN Manual (2008) – Advanced-RNP 1

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• RNP = navigation performance

• A = functionality

Overview RF Turns

Departures En-route Arrivals

Approaches Charting

What is A-RNP

• Nav Spec for various phases of flight

– En-route, Terminal, Approach, Departure

• Advanced functionality for efficiency

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RNP AR Light

Super RNP APCH – Scalable RNP

– BaroVNAV

– TOAC

– RF

– Holding

– FRT

– RF

– Holding

– FRT

General Limitations

• GNSS only

• Buffer area outside of primary area

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RF Turns

• No RF from FAF to Final MA

• Minimum segment length and maximum turn angle in approach phase

• Minimum turn radius 2 x RNP

• Maximum nominal bank angle 25°

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Departures

• Turns allowed: 2-358°

• Spiral splay for joining different semi-widths

• OIS height calculation: d based on arc length with smaller radius (r – 186m)

• Turns before achieving 90m MOC

Spec <15NM 15-30NM >30NM

RNP 1 2 2.5 3.5

RNP 0.3 0.95 1.45 2.45

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En-route

• No change in design criteria

• Optional features?

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Spec Oceanic En-route

RNP 2 5 5

RNP 1 N/A 3.5

Arrivals

• No change in design criteria

• Holding functionality

• Optional features?

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Spec <30NM >30NM

RNP 1 2.5 3.5

RNP 0.3 1.45 2.45

Approaches - Initial

• Default RNP 1 = RNP APCH

• RNP 0.3 = 1.45NM ½AW

• Turns >90° using RF

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A-RNP Approach - Intermediate

• Default RNP 1 = RNP APCH

• RNP 0.3 = 1.45NM ½AW

• Min segment 1.5NM, max 15NM

• Turns up to 30°/15° at FAF or use RF

• RF criteria when connecting to FAF: – Max 45° track angle change

– Min radius 2.55NM

– Min segment 2NM

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A-RNP Approach – Final & MA

• Final Approach, Initial and Intermediate Missed approach = RNP APCH

• Final Missed Approach:

– RF turns (same d0 calculation as Departure)

– Optional features

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Charting Issues

• 30 Nov 2022 RNAV(GNSS) & RNAV(RNP) -> RNP • PBN requirements box to include

– Nav specification – Nav requirements

• Chart designation to include suffix for: – LPV only – LNAV/VNAV only – LPV, LNAV/VNAV only –

LP only – AR

• Variable RNP accuracy requirements charted by notes

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QUESTIONS?