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Procedure Design Considerations

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Presentation on theme: "Procedure Design Considerations"— Presentation transcript:

1 Procedure Design Considerations
Narrator BEIJING, CHINA; 30 JUN-11 JUL 2014

2 Learning Objectives By the end of this presentation you should understand: Procedure design considerations including: Path Terminators Waypoint Types Factors affecting turn radius

3 Conceptual Design: What Next?

4 Procedure Design Considerations RNAV Path Types

5 Why PBN

6 Waypoints PBN Route Using Waypoints

7 Path Terminators Path Terminator A A C C D D F F H I I M R R T V
Constant DME arc A C A D F I M R Altitude Distance DME distance Next leg Manual termination Radial termination Fix Course to C Direct Track D Course from a fix to F Holding pattern H Initial I Constant radius R Track between T Heading to V

8 Path Terminators Track to Fix - TF Direct to Fix - DF
Course to Fix - CF Fix to Altitude - FA Course to Altitude - CA Heading to Altitude - VA Radius to Fix - RF Fix to Manual Termination – FM/VM

9 Track to Fix B TF Leg A

10 Direct to Fix Unspecified position Direct DF Leg A

11 Course to Fix 080 A CF Leg

12 Fix to Altitude A Unspecified Position 8000' FA Leg 080

13 Course to Altitude Unspecified Position CA Leg 090

14 Heading to Altitude Unspecified Position VA Leg 090 8000'

15 Radius to Fix RF Leg C B Next A Segment Arc Centre Previous Segment

16 Fix to Manual Termination
110° VM Leg Radar Vectors A FM Leg 120

17 Track Distances Between Turns
Ya Yb a b Legdist Fly-by WP ra r b Ya a Legdist Fly-by WP Fly-over WP ra a Legdist Fly-over WP ra1 Yb b Fly-by WP a Legdist Fly-over WP Fly-over WP ra1

18 Impact of Turn Performance
Fly-By vs Fly-Over Fly-Over Fly-By

19 Impact of Turn Performance
Fly-By DTA DTA MinimumSegment Length= DTA1+DTA2 X-y2/(-9/43z) Q2*t95-(43r/2) Q2*t95-(43r/2) J<>(t%w +(12#d-p4))

20 Impact of Turn Performance Speed Affects Turn Radius

21 Impact of Turn Performance Bank Angle Affects Turn Radius

22 Impact of Turn Performance
Fly-By B A

23 Impact of Turn Performance

24 Impact of Turn Performance

25 Impact of Turn Performance
Turn Start Point -> Turn Start Point ->

26 Impact of Turn Performance

27 Impact of Turn Performance

28 Impact of Turn Performance

29 Impact of Turn Angle

30 Impact of Turn Angle B A

31 Impact of Turn Angle B A

32 Impact of Turn Angle B A

33 Impact of Turn Angle

34 Impact of Turn Performance
RF Turns Radius Fix All aircraft fly assigned radius

35 ATC Design Considerations
Turns of more than 90 degrees may result in significant track variation. Turns of 60 to 90 degrees create more manageable track variations. Turns of 60 or less result in little track variation. RF turns result in little track variation.

36 Impact of Turn Performance Controlling Angles & Speed

37 Speed and Altitude Constraints
Speed constraints allow tighter turns and can assist ATC function. Altitude constraints can provide separation from obstacles and other aircraft.

38 Procedure Design Considerations RNAV Approach Types { RNAV (GNSS) vs RNAV(RNP) }

39 PBN ICAO State Letter SP 65/4-13/24 Proposes amendments to:
PANS-OPS, Volume I PAN-OPS Volume II Annex 4 Annex 6, Parts I, II and III Annex 14, Volume II Annex 15 PANS-ABC Applicable on 13 November 2014

40 RNAV (GNSS) Approaches
T Bar Y Bar IAF With RF* IAF IAF o 70 o IAF 90 IF IAF IF/IAF RF FAF FAF 45 o FAF IAF MA pt MA pt MA pt *PANS-OPS 13 NOV 2014

41 RNAV (RNP) Approaches RNP-AR RF FAF IAF MA pt

42 RNAV (GNSS and RNP) RNAV(GNSS) is an RNP approach
RNAV(RNP) is an RNP-AR approach Letters in parenthesis are not said in clearance RNAV(GNSS) RWY22 and RNAV(RNP)RWY22 are both cleared as RNAV RWY22 approach.

43 RNAV (GNSS and RNP) State Letter SP 65/4-13/24 effective 13 NOV 2014
A one-step eight-year transition period, starting 13 November 2014, is being proposed to allow States sufficient time to develop a transition plan and to convert the existing RNAV approach procedures to RNP by 2022. ICAO will issue a new circular (Circ 336 — Circular on Conversion of RNAV to RNP Approach Chart Depiction) From 1 December 2022: charts depicting procedures that meet the RNP APCH navigation specification criteria shall include the term RNP in the identification (e.g. RNP RWY 23). charts depicting procedures that meet the RNP AR APCH navigation specification shall include the term RNP in the identification with a parenthetical suffix (AR). (e.g. RNP RWY 23 (AR)).

44 Reminder Steps so far! What is the Intended Purpose – as per Airspace Concept Which Operators and Aircraft Types – as per traffic sample (assumptions) What is the Navaid Coverage – as per infrastructure assumptions What are the Environment Constraints – determined by Airspace Design Team What other Constraints, incl. obstacles? Design the Procedure

45 Thank You

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