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12/23/2009 MTR Corporation Area Navigation and Required Navigation Performance Yuuji Izumo VATSIM Hong Kong Standing Committee on Aviation Resource and Education Development

Area Navigation and Required Navigation Performance

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Page 1: Area Navigation and Required Navigation Performance

12/23/2009MTR Corporation

Area Navigation and Required Navigation Performance

Yuuji IzumoVATSIM Hong KongStanding Committee on Aviation Resource and Education Development

Page 2: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

Conventional Navigation-Conventional radio navigation rely on ground equipment

- Routes are linked by ground equipments Like VOR / NDB

- Ground Equipments must be functional

- Aircraft must flying with ground equipment

Page 3: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

RNAV- INS or IRS can help aircraft navigate with virtual waypoints and ground equipment

- Routes were linked by waypoints

- Aircraft can fly without ground equipment but navigate by onboard waypoint database

Page 4: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

RNP- RNP (Required Navigation Performance) is based on RNAV

- However it required aircraft cannot drift from the route for over some nautical miles.

- Like RNP 10 = aircraft cannot drift from the route over 10 nm, now using on cross ocean flights.

Page 5: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

RNPOcean Airway and Terminal Ocean Airway and Terminal

RNAV 10 RNAV 5 RNP4 RNP 2

RNAV 2 RNP 1

RNAV 1 RNP 0.3

RNP 0.1

Page 6: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

RNP- As under RNP navigation, aircraft will not allowed drift from the route away

-RNP0.3 / 0.5 now used on critical terrain approach routes

- In busy airports, aircraft separation can be reduced under RNP operation

Page 7: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

Summary

Page 8: Area Navigation and Required Navigation Performance

http://hk.vatsea.net/ (+852) 35947770VATSIM Hong Kong

Map - Conventional Map were made by Mercator Projection method

- However this method treat our Earth as a perfect sphere

- After Human invented satellite, we found the Earth was actually oval shape

- Therefore charts nowadays are WGS84 standard to ensure we have correct position

Page 9: Area Navigation and Required Navigation Performance

http://hk.vatsea.net (+852) 35947770VATSIM Hong Kong