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1 EASA CNS/ATM Steering Group ICAO PBN status and its repercussion on EASA material P. GAYRAUD /B. RABILLER Cologne the 21st of June 2007.

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Presentation on theme: "1 EASA CNS/ATM Steering Group ICAO PBN status and its repercussion on EASA material P. GAYRAUD /B. RABILLER Cologne the 21st of June 2007."— Presentation transcript:

1 1 EASA CNS/ATM Steering Group ICAO PBN status and its repercussion on EASA material P. GAYRAUD /B. RABILLER Cologne the 21st of June 2007

2 2 ICAO DOC 9613 PBN manual

3 3 Background RNP concept initially published by ICAO: Doc 9613 (RNP Manual) –RNP types only identified by an accuracy value –Lack of Airworthiness regulation or Guidance materials (except for RNP 10) –Industry has developed ED-75/DO-236 In parallel, development of RNAVs with specific requirements in different regions of the world  ICAO decision in 2003 to set up RNPSORSG (RNP and Special Requirements Study Group)

4 4 Status RNPSORSG outcome: new edition of ICAO Doc 9613 « Performance Based Navigation Manual » superseding the existing RNP Manual Final draft posted on the ICAO website (VOL I and VOL II) ICAO State letter dated 27th of April 07 introducing the PBN concept and providing in attachment the VOL II document only (Navigation specification)

5 5 PBN Manual Content Vol 1: Concepts and Implementation Guidance Explains how a given Navigation Application (associated with COM, SUR and ATM) can support given operations in an Airspace Vol 2: Implementing RNAV and RNP (Navigation Specifications)

6 6 Concepts Navigation Application. The application of a navigation specification and the supporting Navaid infrastructure, to routes, procedures, and/or defined airspace volume, in accordance with the intended Airspace concept. Navigation Specification. A set of aircraft and air crew requirements needed to support Performance based navigation operations within a defined airspace. There are two kinds of navigation specification: RNAV and RNP: –RNP X: A navigation specification with an On-board Performance Monitoring and Alerting function (OPMA) –RNAV X: A navigation specification without an On-board Performance Monitoring and Alerting function “X” refers to the lateral navigation accuracy in Nm (95%) Navigation application Navigation specificationNAVAID infrastructure Performance Based Navigation Concept RNP = RNAV + OPMA

7 7 Navigation Specification Navigation Specifications content: –Required performance (accuracy, integrity, availability and continuity) –Eligible sensors for the achievement of the required performance –Required navigation functionalities in order to meet the required performance –Requirements on the flight crew in order to achieve the required performance from the aircraft and the RNAV system. Navigation Specifications are not totally « performance-based »: –The requirement allocation to Aircraft, Aircrew and ATM is not independent of technology –The number of technologies is limited (GNSS, IRS, DME…)  Specific requirements on: sensors, navigation functionalities and display Navigation Specification advantage –Only one set of requirements for a given Navigation Application Separation or obstacle clearance Operational aspects Aircrew and controllers training –Instead of requirements specific to the sensor technology

8 8 OPMA: On-board Performance Monitoring and Alerting function A function on board the aircraft detecting and informing the crew when the RNAV system is unable to satisfy the performance prescribed in the Navigation Specification. This function should monitor all type of errors which may affect the aircraft ability to follow the desired flight path. The required level of on board monitoring and alerting is stipulated in each RNP navigation specification. This function may be: –a mix of « automatic » monitoring (e.g NSE monitoring through RAIM) and operational procedure (FTE monitoring by the crew) –or only « automatic » monitoring (e.g TSE monitoring)

9 9 RNP versus RNAV performance Accuracy TSE Monitoring and alerting % 95% % Desired route 2 x nav accuracy 1 x nav accuracy RNP Performance Accuracy 95% RNAV Performance Desired route 1 x nav accuracy TSE Monitoring and alerting TSE< threshold Crew procedure if TSE> threshold

10 10 Overview of navigation specifications (1/2) Area of application Navigation accuracy Designation of navigation standard Current situation Designation of Navigation Specification: PBN concept (new) Oceanic/Remote 10RNP 10RNAV 10 4RNP 4 En Route Continental 5B-RNAVRNAV 5 En route continental and Terminal 2US-RNAV type ARNAV 2

11 11 Overview of navigation specifications (2/2) Area of application Navigation accuracy Designation of navigation standard Current situation Designation of Navigation Specification: PBN concept (new) Terminal 1P-RNAV US-RNAV type B RNAV 1 1N/ABasic-RNP 1 Approach 0.3RNAV (GNSS)RNP APCH 0.3 – 0.1RNP SAAAR RNP AR RNP AR APCH

12 12 Navigation Specification comparison (1) RNAV 10RNAV 5RNAV 1RNP 4BASIC- RNP 1 RNP APCH Performance Requirements - Accuracy - Equipment malfunction - Continuity - Signal in Space 10NM 95% Major Major Error > 20 NM, Prob < 10-7/h 5NM 95% Major Minor Error > 10 NM, Prob < 10-7/h 1NM 95% Major Minor Error > 2 NM, Prob < 10-7/h 4NM 95% Major Major Error > 8 NM, Prob < 10-7/h 1NM 95% Major Minor Error > 2 NM, Prob < 10-7/h 1-0.3NM 95% Major Minor Error > NM, Prob < 10-7/h OPMA Error > 8NM, Prob < 10-5 Error > 2NM, Prob < 10-5 Error > 2-0.6NM, Prob < 10-5 Minimum equipment 2 LRNS using: - GNSS - IRS 1 system using: - GNSS - DME/DME - VOR/DME - IRS 2 systems using: - GNSS - DME/DME - DME/DME /IRS 2 LRNS using at least: - GNSS System using at least: - GNSS System using at least: - GNSS § x Specific requirements concerning the positioning function - GNSS - IRS - 2IRS + GNSS - GNSS - DME/DME - VOR/DME - IRS - GNSS - DME/DME - DME/DME /IRS § x.3.3

13 13 Navigation Specification comparison (2) RNAV 10RNAV 5RNAV 1RNP 4BASIC- RNP 1 RNP APCH § x Functional Requirements - Display No Yes Yes + Yes Yes + Yes ++ - Navigation Functionalities No Yes § x.3.4 Operating procedures § x.3.5 Pilot Knowledge and Training § x.3.6 Navigation Databases § x.3.7 Oversight of Operators Yes NoYes LOA Type 2

14 14 PBN manual publication repercussion on EASA materials (1/3) ICAO PBN manual is the most recent document addressing airworthiness and operational criteria –It includes up to date requirements and/or clarifications –In particular those related to recent in service experience and those related to harmonisation with other Authorities (mainly with FAA). After a first assessment most of AMC/TGL are consistent with the PBN manual except TGL 10 for P-RNAV and the lack of an AMC for RNP 4 and for Basic-RNP 1.

15 15 PBN manual publication repercussion on EASA materials(2/3) Area of applicationNavigation accuracy Designation of navigation standard Current situation Designation of navigation specification PBN concept (new) EASA material Oceanic/Remote10RNP 10RNAV 10AMC “Recognition of FAA Order a for RNP 10 Operations” 4RNP 4 Herve’s proposal En Route Continental 5B-RNAVRNAV 5AMC 20-4 “Airworthiness Approval and Operational Criteria For the Use of Navigation Systems in European Airspace Designated For Basic RNAV Operations” Terminal1P-RNAV US-RNAV type B RNAV 1TGL 10 “AIRWORTHINESS AND OPERATIONAL APPROVAL FOR PRECISION RNAV OPERATIONS IN DESIGNATED EUROPEAN AIRSPACE” and new AMC N/ABasic-RNP 1 No document N/AAdvanced RNP 1 (provision only) No document Approach0.3RNAV (GNSS)RNP APCHAMC 20-XX “ AIRWORTHINESS AND OPERATIONAL APPROVAL FOR RNP APPROACH (RNP APCH) OPERATIONS” RNP SAAAR RNP AR RNP AR APCH AMC 20-XZ “AIRWORTHINESS AND OPERATIONAL APPROVAL FOR RNP AR APPROACH (RNP AR APCH) OPERATIONS”

16 16 PBN manual publication repercussion on EASA materials (3/3) PBN repercussions are not significant on EASA materials but general discussions are necessary to prepare the future: 1- What is the role of the RNP RNAV MASPS (DO-236/ ED-75) taking into account the PBN manual publication? Should this standard be amended to be in line with this document? 2- Should future “RNAV” AMCs be only a reference to PBN navigation specification or should AMCs still need to include all the details (stand-alone document)? 3- Should EU-OPS 1 (e.g and 1.865) be amended to reflect the PBN manual in particular in terms of terminology used?

17 17 Proposed recommendations The following aspects, should be addressed: (a)Review and, where necessary, propose update to EU- OPS to ensure requirements for RNAV and RNP operations are consistent with the ICAO PBN manual (b)Review existing RNAV TGL/AMC and, where necessary, update these documents (e.g. P-RNAV) (c)Issue, when there is an operational need (e.g. RNP 4), an AMC addressing the related ICAO Navigation Specification. EASA should decide if the AMC content is only a reference to the ICAO Navigation Specification or if it includes all the details (cut and paste of the ICAO Navigation Specification plus refinement if necessary).


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