08 presentation of a424a and sesar wp.9.31
TRANSCRIPT
The European Organisation for the Safety of Air Navigation
ARINC 424A specification and SESAR WP9.31
AIXM Procedure Modelling/Encoding seminarBrussels – 01/02 Sept 2010
Hubert LEPORIEurocontrol AIM Unit
ARINC 424A specification and SESAR WP9.31 2
Arinc424 specification
• 70’s: development of the first Flight Management Systems (FMS)
• Need for more an more complex embedded navigation databases to support evolving navigation techniques…
Navigation data
Arinc424
AIP
AIP
ARINC 424A specification and SESAR WP9.31 3
Arinc424 specification
• Arinc424: “Navigation System Data Base”
• sets forth the air transport industry’s recommended standards for the preparation of airborne navigation system reference data files.
• Version 1 published in May 1975
• Version 19 published in December 2008 – applicable today
• Arinc424 committee
• 1 regular meeting per year to discuss on A424 change proposals
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Arinc424 specification
• The Arinc424 specifies a format of navigation (and communication) data.• Plain text - lines of 132 alphanumeric characters• Navigation data: Airports, Runways, Navaids, Procedures• Communication data: Com Services (ATIS…)
• The Arinc424 scope is not restricted to FMS data – it also includes data for Flight Planning systems, Simulation tools…
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Arinc424 specification
SEURP EBBREB BRU[………….]BRUSSELS ZAVENTEM 000000310
A424-A Section 4 A424-A Section 5
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Arinc424 specification
• A424 P/T are referenced in ICAO Performance-Based Navigation Manual
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ANSPs
AIP
…
Data providers
…
The current A424 data chain
FMS suppliers
AIP
A42
4
$$
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NDBX concept / Arinc424-A
• Since 2006, a technical group formed inside AEEC has been studying the feasibility to define and standardize an open source format for embedded navigation databases => NDBX• based on the content of Arinc424 v.19 but restricted to FMS
perimeter• relying on a new UML model and on XML & Binary XML
representation of the data
• In 2008, the decision was taken by the AEEC to merge the existing Arinc424 specification and the NDBX standard => Arinc424-A
ARINC 424A specification and SESAR WP9.31 9
Arinc424-A : the big picture
ARINC424-19NDBX
(Embedded format Requirements)
Input for the definition of ARINC424-A content
ARINC424-A formats Script 1Visual Basic
“Bijection” between original A414-19 and Arinc424-A ASCII
ARINC 424AASCII
(Legacy Format)
ARINC424ABXML
(embedded XML)
Full ARINC424AXML
Script 2TBD
ARINC424-A Model UML
Adapted ARINC424
XML ?
ARINC 424A
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ANSPs
AIP
…
Data providers
…
The future A424A-NDBX data chain (?)
New generation of Avionic Systems
AIP
A42
4A B
-XM
L
$$
ARINC 424A specification and SESAR WP9.31 11
Eurocontrol’s involvement in Arinc424A
• 2006-2007: Eurocontrol participated in the initial NDBX committee and shared AIXM experience with the group
• 2007-2009: A Business Rules Working Group was formed inside the NDBX Committee, led by Eurocontrol and tasked with the development of an initial set of validation rules.
• 2010-2012: Eurocontrol continues to support the development of the A424A specification through its contribution to SESAR project 9.31.
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SESAR WP9.31 “Aeronautical Databases”
• Scope of WP 9.31 • Structure and content of Navigation, Airport, Terrain &
Obstacle DB• Evolutions of the database production chain (focus on data
integrity, performance…)
• WP9.31 includes some interaction with the ARINC424A standardisation group for the integration of new navigation database requirements
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SESAR WP9.31 “Aeronautical Databases”
• 2010: Produce business rules for Arinc424-A, following the methodology used for the AIXM 5.1 business rules
• 2010-2012:
ARINC 424A UML/XML/BXML
FMSSimulation
Define a set of mapping rules for conversion of ground sources (AIXM 5.1) into Arinc424A data (2011)
- Regulatory framework- Identify the most effective means to ensure data integrity- Recommendations for DB packing, verification, certification
Definition of Global Database Management Process
Practically – validation of NavDB chain
End User validation
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Questions ?