The Research of One Engine Inoperation for RNP

Presented by Wang Zhong

Content

• Introduction

• The Criterion for EOSID

• RNP1’s EOSID

• Conclusions

Introduction

• CAAC ’s PBN Roadmap – Near term(2009-2012)

30% airports have the ability of PBN operations – Medium term (2013-2016)

All transport airports have the ability of PBN operations – long term (2017-2025)

• Present situation– Total airports 196– RNAV 23– RNP APCH 59– RNP AR 15

Special Airports

AC & Regulations

• Notice for designing the departure procedure of one engine inoperation (AC-FS-2000-2)

Criterion for EOSID

• Conventional Procedure • RNP AR procedures

Conventional Protection Area

45°

900m

900m

900+0.25D’

D’

D

900+0.125D

90m

12.5%

900m

Initial protection area of departure Procedure turning protection area

Departure Splay AreaEU-OPS

Heading change<15°600mHeading change>15°900m

RNP AR Protection Area

90m

12.5%

2xR

NP

2xR

NP

RF leg protection area

2xRNP

RNP-AR 0.31111m

RNP1 EOSID Protection Area

The earlist turning point

The latest turning point

30°

0.3NM

0.3NM

The latest turning point

The latest turning point

30°

A/2

0.3NM

0.3NM

Fly-over Fly-by

Procedure turning area constructing modelOut boundary not constant

RNP 1 1111m

RNP1 EOSID Turning Area Constructing

• Fly-over waypoint– The earliest turning point =-ATT– The latest turning point= ATT+c

• Fly-by waypoint– The earliest turning point =-ATT+ R*tan(A/2)– The latest turning point= ATT+c- R*tan(A/2)

• ATT=0.8*XTT

RNP1 EOSID Wind Model

53.280082.0 heightvwind

Key point:

Turning area changed by the wind factor

Wind:

ICAO wind: 30kt

RNP1 reference Doc 9905

Consider the worse wind condition

Turning Degree

Wind model

15° 30° 45° 60° 75° 90° 105° 120°

ICAO wind 160991666

61723

31780

01836

71893

41950

120068

RNP1 wind 163741721

71806

01890

21974

52058

82143

022273

Example:

Above the airport: 2000ft

Instrument Air Speed : 205 kt.

Bank angle : 15°

Wind spiral radiusRNP1>ICAO

Dazhou airport , southwest of china

14

EOSIDEOSID

RNP 1 SIDRNP 1 SID

DX80DX8011

DX40DX4022

EOSID Validation

• Simulator Validation – B737-700(22k)– Max weight, max temperature– Max weight, max temperature, max crosswind.– Min weight, min temperature, max crosswind.– Min weight, min temperature, max headwind.– Max weight, min temperature, max tailwind

• Flight Validation

Flight Validation

Conclusions

• No specification or advisory circular about the RNP 1 on EOSID in China

• New wind model and RNP APCH turning construction model

• Simulator and flight validation prove the effectiveness