EASA Guidance Material for PBN
Geoff Burtenshaw
Directorate of Airspace Policy
UK Civil Aviation Authority
Overview
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Use and scope of navigation specifications
Navigation specifications and the approval process
Relationship with existing criteria
Navigation specification template
Status of EASA Guidance Material
Summary
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Use and Scope of Navigation
Specification by Flight Phase
PBN Manual includes airworthiness, operational and training guidance:
FLIGHT PHASE
NAVIGATION
SPECIFICATION
APPROACH
En Route
Oceanic /
Remote
10
En Route
Continental
ARR
RNAV 5
5
5
RNAV 2
2
2
RNAV 1
1
1
1
1
1
1
1
1
1
1
1
1
1
0.3
1
1 - 0.1
1 - 0.1
0.3 - 0.1
1 - 0.1
RNAV 10 (RNP 10)
RNP 4
Basic-RNP 1
RNP APCH
RNP AR APCH
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Initial
Intermed
Final
Missed
DEP
2
4
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Navigation Specification
Overview of Specific Navigation Services
GNSS
IRU
RNAV 10
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√
RNAV 5
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RNAV 2/1
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RNP 4
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Basic-RNP 1
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RNP APCH
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RNP AR
APCH
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D/D
D/D/IRU
D/VOR
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√
√
√
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Use and Scope of
Navigation Specifications
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ICAO navigation specifications do not address all
airspace requirements (e.g., comm, surv) necessary for
operation in a particular airspace, route or area
¾ These will be listed in the AIP and ICAO Regional
Supplementary Procedures
¾ Incumbent upon States to undertake a safety
assessment in accordance with provisions outlined
in Annex 11 and PANS-ATM, Chapter 2
ICAO PBN Manual provides a standardised set of
criteria, but is not a stand-alone certification document
¾ Examples: RNP 4, RNAV 1, RNP AR APCH
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Navigation Specifications and the
Approval Process
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Navigation specifications are used by States as basis for aircraft
certification and operational approval
A navigation specification does not in itself constitute regulatory
guidance material
¾ Aircraft approved by State of manufacture
¾ Operators approved in accordance with their National
Operating Rules
Compliance with one navigation specification does not guarantee
compliance with another
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Relationship with Existing Criteria
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Not re-inventing the wheel
Taking existing criteria e.g., Orders, ACs, AMC, and
TGL etc.
A more logical structure
Common format and content
More complete to enable uniform implementation
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Navigation Specification Template
Common Organisation of Volume II, Parts B and C
¾ X.1
Introduction
¾ X.2
ANSP Considerations
¾ X.3
Navigation Specification
¾ X.4
References
Where “X” represents the chapter number
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Navigation Specification
Section X.3
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Background
Approval process
Aircraft requirements
Operating procedures
Pilot knowledge and training
Navigation database
Oversight of operators
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Navigation Specification
Section X.3 : Approval Process
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Aircraft Eligibility
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Must be demonstrated
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Can be based on Aircraft Flight Manual or supplemental
information
Operational Approval
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Operating procedures
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Flight crew training
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Control of navigation database process, where required
Approval obtained in accordance with State operating rules
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Navigation Specification
Section X.3 Aircraft Requirements
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Performance Requirements
¾ Accuracy, Integrity, Continuity, GNSS signal-in-space
¾ Performance monitoring and alerting
¾ Only applicable for RNP systems
Criteria for Specific Navigation Services
¾ Defines allowable systems and required performance
Functional requirements
¾ Just as important as performance
Navigation database requirements
¾ When required
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Navigation Specification
Section X.3 Operating Procedures
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Pre-flight planning
General operating procedures
¾ During the flight
Performance expectations (deviation from path)
¾ Pilot has critical role in performance monitoring
Contingency procedures
¾ E.g. procedure in case of RNAV system failure
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Navigation Specification
Section X.3 Pilot Knowledge and Training
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Lists training tasks considered important, which may
already be part of operator’s training program
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System-specific information on how navigation
system functions is vital to success
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PBN Navigation Specifications
and EASA Guidance material
Navigation Specification
RNAV 10 (RNP 10)
RNAV 5
RNAV 2
RNAV 1
RNP 4
Basic-RNP 1
RNP APCH
RNP AR APCH
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EASA Guidance Material
AMC 20-12
AMC 20-4
See RNAV 1
JAA TGL No. 10
PP045 Information paper (ops.013)
See RNAV 1
AMC 20-27
AMC 20-26
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Status of EASA Guidance Material
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AMC 20-12 (RNP 10)
¾ Published December 2006
¾ Recognition of FAA Order 8400.12a for RNP 10
operations
AMC 20-4 (Basic RNAV)
¾ Transposed from JAA TGL No. 2
¾ Published November 2003
¾ PBN navigation specification for RNAV 5 based
directly on B-RNAV
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Status of EASA Guidance Material
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JAA TGL No. 10 (Precision RNAV)
¾ Published November 2000
¾ P-RNAV fulfils all of the PBN requirements for RNAV 1
operations using DME/DME or GNSS
¾ EASA transposing JAA guidance into AMC (AMC 20-16)
¾ Updating criteria, bringing more into line with the PBN
Manual and adding RF path terminator as an option
¾ Publication not until early 2011 due to slippage of the EASA
Rulemaking Programme
¾ P-RNAV = RNAV 2 where the environment does not support
1 NM accuracy
¾ P-RNAV = RNAV 1 = Basic RNP 1 where the sensor used is
GNSS or the aircraft is RNP qualified
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Status of EASA Guidance Material
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PP045 Information Paper (RNP 4)
¾ References
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FAA Order 8400.33
State Letter Ref AN 13/33.7-04/86
PBN Manual Doc 9613
Other operational material e.g., EU-OPS 1.243, Annex 6 and
Doc 7030/4
AMC for RNP 4 drafted and RIA prepared
Passed to EASA Rulemaking Directorate and assigned
Tasking OPS.013
Yet to appear in the Rulemaking Programme
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Status of EASA Guidance Material
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AMC 20-27 (RNP APCH)
¾ EASA published NPA 2008-14 in May of this year
¾ Comment period closed and preparation of a Comment
Response Document (CRD) underway
¾ Due to complexity of issues and significant number of
comments, will not be published before early 2009
AMC 20-26 (RNP AR APCH)
¾ Status – as above
¾ AMC goes beyond the PBN Manual in terms of scope i.e.,
includes departure operations and application on
procedures more advanced than those designed in
accordance with ICAO RNP AR Manual, Doc 9905
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Status of EASA Guidance Material
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Although not in the PBN Manual, EASA is also
catering for SBAS APV approach operations (LPV)
Draft AMC 20-28 in preparation
Publication not until early 2011
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Summary
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EASA has good coverage of existing PBN Navigation
Specifications
AMC either published or under development
providing means for issuing airworthiness and
operational approvals
Concerns regarding the slippage in the Rulemaking
Programme and delayed AMC 20-16, AMC 20-28 and
OPS.013
General concern regarding ability of the Agency to
keep pace with emerging Navigation Specifications
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QUESTIONS?
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