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CHAIN - Data Integrity |
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“Data Integrity - Everybody is involved”
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The objective of CHAIN (Controlled and Harmonised Aeronautical Information Network) is to improve the accuracy and quality of the originated aeronautical data and its management from the point of origination to the point of publication and to subsequently enable enhanced processing throughout the entire aeronautical data chain.
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| | Scope of CHAIN |
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The purpose is to support aeronautical information regulators and service providers in implementing and maintaining traceable, controlled and auditable processes in compliance with ICAO Annex 15 requirements for data quality with a focus on data integrity.
The scope of CHAIN covers flight critical and essential navigational aeronautical data (e.g. a runway threshold coordinates and heights) as established in ICAO Annex 15, supplemented by the industry standards EUROCAE ED-76 and ED-77.
The vision is to assist in the establishment of an automated aeronautical data supply chain to support AIS regulators, AIS providers and aeronautical data originators to enable system-wide interoperability.
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- Note: The time of operation for CHAIN was set from March 2005 to October 2007
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| CHAIN's vision | |
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Present and future navigation and the air traffic management systems are dependent on aeronautical data and many of them require significantly higher aeronautical data quality than is currently available. The high-quality data means a data product with a minimum of one error in 100.000.000 units.
The improvement of aeronautical data quality to meet the levels required by ICAO is a long standing issue which, due to complexity of the data processes, reliance on paper based systems and human input has not been solved yet.
In consequence, there is a low compliance rate amongst States in achieving the specific aeronautical data quality requirements established by ICAO Annex 15 such as: accuracy, resolution, protection, traceability and timeliness, but in particular integrity.
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