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For any question on data and metadata, please contact: Eurostat user support |
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1.1. Contact organisation | Centraal Bureau voor de Statistiek (CBS) / Statistics Netherlands |
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1.2. Contact organisation unit | Department Traffic and Transport |
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1.5. Contact mail address | Contact details under this link: https://www.cbs.nl/en-gb/about-us/contact |
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2.1. Metadata last certified | 28/07/2023 | ||
2.2. Metadata last posted | 28/07/2023 | ||
2.3. Metadata last update | 28/07/2023 |
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3.1. Data description | |||
The statistics on commercial aviation covers scheduled and non-scheduled air traffic at the five Dutch airports Amsterdam Schiphol, Rotterdam The Hague, Eindhoven, Maastricht Aachen and Groningen Eelde. Based on European legal bases results are transmitted to the statistical office of the European Union (Eurostat) one to four months after the reference month. The data includes all flights with passenger, freight and mail as well as empty leg flights in domestic and international traffic where the take-off or landing airport is located in The Netherlands. The five airports contribute to the statistics by collecting and transmitting data to the national statistical office. The statistics are compiled and transmitted montly to Eurostat by the National Statistical Institute of The Netherlands (Centraal Bureau voor de Statistiek). EU:
Three data sets required by the Regulation – A1, B1 and C1 – are provided to Eurostat:
All data sets are provided on monthly basis. Airports handling less than 15 000 passenger units annually are not included in the data sets. All data sets have been provided according to the legal act (with no derogations) starting from 2002 reference year. Partial information (passenger transport only, annual aggregates) are available starting from 1993 reference year. When comparing the Dutch air transport statistics data published by Eurostat with the results of the National Statistics Institute, it has to be considered, that the two data sets show small discrepancies by definition. The national published data include empty leg flights and technical stops. The national published data does not include taxi flights. Following Regulation (EC) N°1358/2003, empty leg flights or technical stops are not transmitted to Eurostat. Dataset A1 and B1- data storage: CNA keeps data permanent at individual airport level. |
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3.2. Classification system | |||
Airports are classified according to ICAO (International Civil Aviation Organization) airport coded as listed in ICAO document 7910. Aircrafts are classified according to aggregated aircraft categories based on the ICAO aircraft codes as listed in ICAO document 8643. Airlines are classified according to the ICAO airline codes as listed in the ICAO document 8585. When providing the data to Eurostat, the region where they are licensed is coded accordingly either as European Union (EU) or outside the European Union (non-EU). |
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3.3. Coverage - sector | |||
Air transport - commercial air services and civil aircraft movements for the airports with traffic in excess of 15 000 passenger units annually. |
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3.4. Statistical concepts and definitions | |||
The main concepts used in this domain are the following: Community airport - a defined area on land or water in a Member State subject to the provisions of the treaty, which is intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft and open for commercial air services. Flight stage - the operation of an aircraft from take-off to its next landing. This is linked to the definition of passengers (or freight and mail) on board. Passengers on board - all passengers on board of the aircraft upon landing at the reporting airport or at taking off from the reporting airport. All revenue and non-revenue passengers on board an aircraft during a flight stage. Includes direct transit passengers (counted at arrivals and departures). Direct transit passengers - passengers who, after a short stop, continue their journey on the same aircraft on a flight having the same flight number as the flight on which they arrive. Transfer of indirect transit passengers - passengers arriving and departing on a different aircraft within 24 hours, or on the same aircraft bearing different flight numbers. They are counted twice: once upon arrival and once on departure. Freight and mail on board - all freight and mail on board of the aircraft upon landing at the reporting airport or at taking off from the reporting airport. All freight and mail on board an aircraft during a flight stage. Includes direct transit freight and mail (counted at arrivals and departures). Includes express services and diplomatic bags. Excludes passenger baggage. On flight origin and destination - traffic on a commercial air service identified by a unique flight number subdivided by airport pairs in accordance with point of embarkation and point of disembarkation on that flight. For passengers, freight or mail where the airport of embarkation is not known, the aircraft origin should be deemed to be the point of embarkation; similarly, if the airport of disembarkation is not known, the aircraft destination should be deemed to be the point of disembarkation. This is linked to the definition of passengers carried and freight and mail loaded or unloaded. Passengers carried - all passengers on a specific flight (with one flight number) counted once only and not repeatedly on each individual stage of that flight. All revenue and non-revenue passengers whose journey begin or terminates at the reporting airport and transfer passengers joining or leaving the flight at the reporting airport. Excludes direct transit passengers. Freight and mail loaded or unloaded - all freight and mail loaded onto or unloaded from an aircraft. Includes express services and diplomatic bags. Excludes passenger baggage. Excludes direct transit freight and mail. Passenger unit - one passenger unit is equivalent to either one passenger or 100 kilograms of freight and mail. |
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3.5. Statistical unit | |||
The data are collected at individual airport level. |
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3.6. Statistical population | |||
Four categories of Community airports are defined by the Regulation (EC) N°1358/2003:
Airports under category ‘0’ are not included in the statistics provided to Eurostat. |
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3.7. Reference area | |||
Commercial airports located on the territory of The Netherlands. |
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3.8. Coverage - Time | |||
All data sets have been provided according to the legal act (with no derogations) starting from 2002 reference year. Partial information (annual aggregates on passenger transport only) are available starting from 1993 reference year. |
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3.9. Base period | |||
Not applicable. |
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The units used depend on the variables collected within each data set and are: number of passengers, tonnes, flights, aircraft movements and passenger seats available. The weight of freight and mail is transmitted in tonnes with three decimal places. |
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Reference period is the calendar year 2022. |
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6.1. Institutional Mandate - legal acts and other agreements | |||
National level: European level: until 2002, the data were provided to Eurostat on a voluntary basis; since 2002 data provision is based on an EP and Council framework legal act and on several implementing Commission Regulations:
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6.2. Institutional Mandate - data sharing | |||
Not applicable. |
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7.1. Confidentiality - policy | |||
National level: European level:
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7.2. Confidentiality - data treatment | |||
The procedures with regard to statistical confidentiality folllows the Handbook on Statistical Disclosure Control (2010). Only the airline information data is subject to confidentiality. Before providing the data to Eurostat, the region where they are licensed is coded accordingly either as European Union (EU) or outside the European Union (non-EU). Data confidentiality problems: According to the Dutch Legal base, data on an individual enterprise or data from which this information can be easily obtained cannot be published or otherwise disseminated. |
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8.1. Release calendar | |||
Air transport statistics is published monthly, within one month after the reference month and are preliminary until publishing the annual results. |
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8.2. Release calendar access | |||
8.3. Release policy - user access | |||
Main results of commercial aviation statistics are available free of charge to all users. For more detailed results the data user has to pay for accessing the data. |
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Air transport statistics are published monthly, within one month after the reference month with being preliminary until publishing the annual results. |
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10.1. Dissemination format - News release | |||
The results are published monthly, one month after the reference month and are preliminary until publishing the annual results. |
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10.2. Dissemination format - Publications | |||
Publication of air transport statistics (figures) is done through Statline, the database with figures on our website (https://opendata.cbs.nl/statline/#/CBS/nl/navigatieScherm/thema). Articles are published on our main website www.cbs.nl. |
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10.3. Dissemination format - online database | |||
The results can be found in the Statline database (https://opendata.cbs.nl/statline/#/CBS/nl/dataset/37478hvv/table?ts=1561710788923) (Statistics > Verkeer en Vervoer > Vervoer personen en goederen > Vervoer door de lucht). |
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10.4. Dissemination format - microdata access | |||
Not applicable to air transport statistics. |
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10.5. Dissemination format - other | |||
Open data access is available for the main results of air transport statistics. |
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10.6. Documentation on methodology | |||
A Standard-documentation with Meta information (Definitions, comments, methods, quality) on Air Transport Statistics is available at national level. There is also countries' dedicated section in the Reference Manual on Air Transport Statistics (Part II National Methodologies) available. |
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10.7. Quality management - documentation | |||
Not applicable |
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11.1. Quality assurance | |||
The system follows as far as possible the European Statistics Code of practice and Quality Assurance Framework of the European Statistical System, more precisely Principle 4: Commitment to Quality: |
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11.2. Quality management - assessment | |||
Data quality can be assessed as high. There is a set of validation rules and quality checks put in place, which detect various types of issues. In case of any issues detected, the data providers are contacted to provide explanations or/and revise the data accordingly. Mirror checks (for national transport) and checks for the consistency over times are prepared and revised as well and the results are compared with the data published by the airports at their websites or with overviews they send to Statistics Netherlands. Annually, Eurostat provides a data quality report with a summary of the main findings affecting quality as well as showing the solution adopted and the materiality of the existing differences. Mirror checks and checks for the consistency over times are prepared as well. Next to the extensive plausibility checks, main strength inlcude the completely automatic data transmission by the airports and the excellent cooperation with the relevant departments of the airports. Timeliness and punctuality are very good. Revisions are rare. If there are any inconsistencies Statistics Netherlands provides an explanation which is included in the Country Specific Notes (CSNs) available at Eurostat’s metadata page (in Annex part). |
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12.1. Relevance - User Needs | |||
The key users of air transport statistics collected according to the Regulation 437/2003 are: - Ministery of Infrastructure and Water Management Data of commercial aircraft movements, the routes, numbers of passengers, amount of transported freight and mail as well as seats available provides an impportant basis for decision-making of politics, society and economy in the context of the development and promotion of transport projects. |
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12.2. Relevance - User Satisfaction | |||
No surveys on users' satisfaction or data needs. |
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12.3. Completeness | |||
The data collection on air transport statistics follows the provisions of the Regulation 437/2003. All variables in all three data sets are provided including the voluntary variable – transfer passenger. Some additional information is provided in the Country Specific Notes (CSNs) available at Eurostat’s metadata page (in Annex part). Within the current data collection, it is not possible to identify true first origin/final destination, when the journey include multiple flights. |
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13.1. Accuracy - overall | |||
Overall accuracy of the air transport statistics data is good. The processing with several plausibilty checks as well as checks done before transmitting data to Eurostat provides a high accuracy of the data. Comparisions with published data by the airports are regularly made and show a high level of comparability. The number of transfer passengers in table C1 refers to the number of transfer passengers on outgoing flights. |
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13.2. Sampling error | |||
Not applicable for air transport data collection. |
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13.3. Non-sampling error | |||
Not applicable. |
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14.1. Timeliness | |||
All the statistics required by the provisions of the Regulation 437/2003 are transmitted to Eurostat 4 months after the reference quarter. Difficulties to respect deadline for data transmission: No difficulty to deliver the three datasets with a shorter delay (T+5). |
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14.2. Punctuality | |||
All the statistics required by the provisions of the Regulation 437/2003 are available 2 months before the deadline for the data provisions set up in the legal act. |
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15.1. Comparability - geographical | |||
Not applicable. |
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15.2. Comparability - over time | |||
As from 2002 the statistics on air transport are comparable over time, as they are collected following fully the provisions of the legal act - the Regulation 437/2003. Time series checks are regularly made to detect inconsistencies in the data. |
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15.3. Coherence - cross domain | |||
Comparisons with other transport statistics are only partially and to a limited extent possible with regard to freight transport and passenger transport, since data are currently not available or are not collected at the same level of detail and also different methods and underlying objectives. |
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15.4. Coherence - internal | |||
As from 2002 the 3 data sets (A1, B1 and C1) collected and provided to Eurostat are consistent. Small incoherences between the Dutch air transport statistics data published by Eurostat and the National Statistics Institute might occur. This is partly due to the fact that national data include empty leg flights (A1 and B1 not) and technical stops (all datasets). The national data does not include taxi flights. Following Regulation (EC) N°1358/2003, empty leg flights or technical stops are not transmitted to Eurostat. |
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The response burden is put on the airports, but is reduced to a minimum. The airports provide the data automatically via a data interface and are only contacted if errors cannot be solved by the NSI. |
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17.1. Data revision - policy | |||
The results are published montly, maximum one month after the reference month and are preliminary until publishing the annual results. Revision may be required if for example an airport made a mistake with compiling the dataset sended to us. This doesn't happen often. In case of any data change in the statistics, after the annual data is finalised, an explanation for the change is given in the table publised on the national website. |
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17.2. Data revision - practice | |||
The policy described in 17.1 is fully implemented. |
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18.1. Source data | |||
Dataset A1 – Data Suppliers (Passengers on board/Freight and mail on board): Airports (EHAM, EHRD, EHEH, EHBK, EHGG) Aircraft Information in A1: airports. Seats information information in A1: Airport EHAM: Announce the number of seats available. Dataset B1 –Data Suppliers (Passengers carried/Freight and mail loaded/unloaded): Airports (EHAM, EHRD, EHEH, EHBK, EHGG) Datasets A1 and B1 - Use of Air Waybill Data as information source of freight data: The airway bill is not used as an information source. Freight transported by truck (trucking-data) is excluded. Dataset C1 – Bodies that supply the direct transit information to the CNA: The airports supply the direct transit passengers information. Data are collected directly from airlines or their handling agents. Dataset C1 – Bodies that supply the commercial and total aircraft movement to the CNA:The airports supply the commercial and total aircraft movement information. Data are collected directly from airlines or their handling agents. |
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18.2. Frequency of data collection | |||
Information needed for the datasets A1, B1 and C1 are collected on a montly basis from all reporting airports. |
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18.3. Data collection | |||
The data for the purpose of the Regulation 437/2003 is collected montly (txt-formats) from the airports. The transmission is possible via a fttp-port or via email. |
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18.4. Data validation | |||
Data validation procedure : Validation of airport codes, airline codes and type of aircraft codes. Actions taken when errors are detected: Description of consistency checks : The total number of seats available is compared with the total number of passengers on board. |
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18.5. Data compilation | |||
After various plausibility checks, the data received from the airports are compiled into monthly data following the structure of the data sets which are preset by regulation (EC) 1358/2003. Data codification practices : In general the received codes comply with the Regulation. There is one exception: Transcodification is needed for determining the type of aircraft on airport EHRD-data. Problems on data compilation, validation and delivery : Problems with SDMX data exchange. |
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18.6. Adjustment | |||
Not applicable for air transport data collection. |
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Not applicable. |
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