Commission Regulation (EU) No 73/2010Show full title

ANNEX IV DATA QUALITY REQUIREMENTS REFERRED TO IN ARTICLES 6 AND 7

PART A Data quality requirements

1. Data quality requirements for each data item within the scope of aeronautical data and aeronautical information referred to in the second subparagraph of Article 2(1) shall be as defined by the ICAO standards referred to in Annex III point 11 and other relevant ICAO standards without prejudice to point 2 of this Annex.

2. Data quality requirements for a data item within the scope of aeronautical data and aeronautical information referred to in the second subparagraph of Article 2(1) shall be established based on a safety assessment of the intended uses of the data item where:

(a)

a data item is not defined by the ICAO data quality standards referred to in point 11 of Annex III and other relevant ICAO standards; or

(b)

the data quality requirements for a data item are not met by the ICAO data quality standards referred to in point 11 of Annex III and other relevant ICAO standards.

3. The data quality requirements for the data items referred to in point 2 shall be developed in accordance with a standardised process describing the methodology for the derivation and validation of these requirements prior to publication, taking due account of the potential impact on relevant ICAO provisions.

4. Where a data item has more than one intended use, only the most stringent data quality requirements, arising from the safety assessment referred to in point 2, shall be applied to it.

5. Data quality requirements shall be defined to cover the following for each data item within the scope of aeronautical data and aeronautical information referred to in the second subparagraph of Article 2(1):

(a)

the accuracy and resolution of the data;

(b)

the integrity level of the data;

(c)

the ability to determine the origin of the data;

(d)

the level of assurance that data is made available to the next intended user prior to its effective start date/time and not deleted before its effective end date/time.

6. All of the data items needed to support each application data set and/or a valid subset of the data set shall be defined.

PART B Evidence requirements

Arguments and evidence shall be generated to show that:

(a)

accuracy and resolution requirements are complied with at data origination and maintained through to publication to the next intended user, including, whenever the resolution of a data item is reduced or changed, or the data is translated into a different coordinate system or unit of measurement;

(b)

the origin and change history for each data item is recorded and available for audit;

(c)

the aeronautical data or aeronautical information is complete or any missing items are declared;

(d)

all data origination, production, storage, handling, processing, transfer or distribution processes used for each data item are defined and adequate for the assigned level of integrity of the data item;

(e)

data validation and verification processes are adequate for the assigned integrity level of the data item;

(f)

manual or semi-automated data processes are performed by trained and qualified staff, with clearly defined roles and responsibilities that are recorded in the organisation’s quality system;

(g)

all tools and/or software used to support or implement the processes are validated as fit for purpose in accordance with Annex V;

(h)

an effective error reporting, measurement and corrective action process is in operation in accordance with Part F.

PART C Formal arrangements

Formal arrangements shall include the following minimum content:

(a)

the scope of aeronautical data or aeronautical information to be provided;

(b)

the accuracy, resolution and integrity requirements for each data item supplied;

(c)

the required methods for demonstrating that the data provided conforms with the specified requirements;

(d)

the nature of action to be taken in the event of discovery of a data error or inconsistency in any data provided;

(e)

the following minimum criteria for notification of data changes:

• criteria for determining the timeliness of data provision based on the operational or safety significance of the change,

• any prior notice of expected changes,

• the means to be adopted for notification;

(f)

the party responsible for documenting data changes;

(g)

the means to resolve any potential ambiguities caused where different formats are used to exchange aeronautical data or aeronautical information;

(h)

any limitations on the use of data;

(i)

requirements for the production of quality reports by data providers to facilitate verification of data quality by the data users;

(j)

metadata requirements;

(k)

contingency requirements concerning the continuity of data provision.

PART D Data origination

1. The surveying of radio navigation aids and the origination of calculated or derived data whose coordinates are published in the AIP shall be carried out in accordance with appropriate standards and at least in accordance with the relevant ICAO provisions referred to in point 20 of Annex III.

2. All surveyed data shall be referenced to WGS-84 as specified in the ICAO provisions referred to in point 2 of Annex III.

3. A geoid model, sufficient to meet the ICAO provisions referred to in point 3 of Annex III and the aeronautical data and aeronautical information quality requirements laid down in Annex IV, shall be used in order that all vertical data (surveyed, calculated or derived) may be expressed relative to mean sea level via the Earth Gravitational Model 1996. A ‘geoid’ means the equipotential surface in the gravity field of the Earth, which coincides with the undisturbed mean sea level extended continuously through the continents.

4. Surveyed, calculated and derived data shall be maintained throughout the lifetime of each data item.

5. Survey data categorised as critical or essential data shall be subject to a full initial survey, and thereafter shall be monitored for changes on a yearly basis, as a minimum. Where changes are detected, re-survey of the relevant data shall be undertaken.

6. The following electronic survey data capture and storage techniques shall be employed:

(a)

reference point coordinates shall be loaded to the surveying equipment by digital data transfer;

(b)

the measurements in the field shall be stored digitally;

(c)

raw data shall be digitally transferred and loaded into the processing software.

7. All survey data categorised as critical data shall be subject to sufficient additional measurement to identify survey errors not detectable by single measurement.

8. Aeronautical data and aeronautical information shall be validated and verified prior to use in deriving or calculating other data.

PART E Data process requirements

1. Where processes or parts of processes used in the origination, production, storage, handling, processing, transfer and distribution of aeronautical data and aeronautical information are subject to automation they shall be:

(a)

automated to a level commensurate with the context of the data process;

(b)

automated to optimise the allocation and interaction of human and machine to achieve a high degree of safety and quality benefits of the process;

(c)

designed to avoid the introduction of data errors;

(d)

designed to detect errors in received/input data.

2. Where aeronautical data and aeronautical information is entered manually, it shall be subject to independent verification to identify any errors that may have been introduced.

PART F Error reporting and rectification requirements

The error reporting, measurement and corrective action mechanisms shall ensure that:

(a)

problems identified during aeronautical data and aeronautical information origination, production, storage, handling and processing, or those identified by users after publication, are recorded and reported to the aeronautical information service provider;

(b)

all problems reported with the aeronautical data and aeronautical information are analysed by the aeronautical information service provider and the necessary corrective actions are determined;

(c)

all errors, inconsistencies and anomalies detected in critical and essential aeronautical data and aeronautical information are urgently resolved;

(d)

affected data users are warned of errors by the aeronautical information service provider by the most effective means, taking into account the integrity level of the aeronautical data and aeronautical information and using the notification criteria agreed in the formal arrangements in accordance with Annex IV, Part C point (d);

(e)

error feedback from data users and other aeronautical data and aeronautical information providers is facilitated and encouraged;

(f)

error rates for aeronautical data and aeronautical information are recorded on each occasion that aeronautical data and aeronautical information is transferred between the parties referred to in Article 2(2);

(g)

error rates for those errors detected prior to transfer and those reported after transfer can be identified separately.