1. Contact | ||||||
1.1 Contact organisation | ||||||
Istat - Italian National Statistical Institute | ||||||
1.2 Contact organisation unit | ||||||
ATB - Division for environmental and territorial networks | ||||||
1.3 Contact name | ||||||
Laura De Sandro | ||||||
1.4 Contact person function | ||||||
Laura De Sandro - Researcher, Division for environmental and territorial networks | ||||||
1.5 Contact mail address | ||||||
Viale Liegi, 13
00198 Rome Italy | ||||||
1.6 Contact email address | ||||||
ldesandr@istat.it | ||||||
1.7 Contact phone number | ||||||
+390646737429 | ||||||
1.8 Contact fax number | ||||||
2. Metadata update | ||||||
2.1 Metadata last certified | ||||||
2.2 Metadata last posted | ||||||
2.3 Metadata last update | ||||||
3. Statistical presentation | ||||||
3.1 Data description | ||||||
The new statistical survey on air transport is a total survey collection information on the carriage of passengers, freight and mail by air, flight stages, available seats for passengers on aircraft and aircraft movements. The reporting units are the airports and the data are provided by their management companies. The main topics observed are: Carriage of passengers, freight and mail by air | ||||||
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). | ||||||
3.3 Coverage - sector | ||||||
All commercial flights Scheduled and Charter, without private, school, touristic, panoramic and State flights. | ||||||
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. | ||||||
3.5 Statistical unit | ||||||
The data are collected at individual airport level. | ||||||
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. | ||||||
3.7 Reference area | ||||||
Italy | ||||||
3.8 Coverage - Time | ||||||
All datasets have been provided according to the legal act starting from 2003 reference year. | ||||||
3.9 Base period | ||||||
Not applicable. | ||||||
4. Unit of measure | ||||||
The units used depend on the variables collected within each data set and are: number of passengers, kilogrammes (for freight and mail), aircraft movements and passenger seats available. According to the legal act the weight of freight and mail is transmitted in tonnes without decimal places. | ||||||
5. Reference Period | ||||||
Reference period is the calendar year 2018. | ||||||
6. Institutional Mandate | ||||||
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. | ||||||
7. Confidentiality | ||||||
7.1 Confidentiality - policy | ||||||
National level: European level:
The data provided to Eurostat in the data sets A1, B1 and C1 contain no confidential information. | ||||||
7.2 Confidentiality - data treatment | ||||||
The procedures with regard to statistical confidentiality folllows the Handbook on Statistical Disclosure Control (2010) and the Federal Statistical Act. 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). The data provided to Eurostat in the data sets A1, B1 and C1 contain no confidential information. Data confidentiality problems: There are some confidentiality problems about the airlines.
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8. Release policy | ||||||
8.1 Release calendar | ||||||
Every year, in December, ISTAT publishes a release calendar providing the exact dates for press releases for the coming year. The calendar is distributed to the press and is available free of charge to interested parties. Statistical information is published in accordance with an approved release calendar. | ||||||
8.2 Release calendar access | ||||||
The calendar is available on the website (https://www.istat.it/en/information-and-services/journalists/release-calendar). Not all the disseminations are included in the press release calendar but all are included in the weekly update Calendario delle diffusioni e degli eventi (https://www.istat.it/it/informazioni-e-servizi/per-i-giornalisti/appuntamenti/calendario-diffusioni-ed-eventi ). | ||||||
8.3 Release policy - user access | ||||||
According to its mission, Istat disseminates statistical information in order to make it accessible and usable to everyone and to remove any barriers to the use of data. All data releases are posted on Istat website according to a prefixed annual release calendar, published by the previous December. Time series are available on I.Stat data warehouse and users can choose information according to their needs, building customised tables or downloading prepackaged datasets. Data are always accompanied by meta-information ¿ methodologies, classifications, definitions. Microdata files are released free of charge and in compliance with the principle of statistical secrecy and data protection. Books, press releases, datasets and infographics are also available on Istat web site; moreover main contents are disseminated through Istat Official Twitter account and other social networks. All Istat information are available free of charge and data are reusable providing the source. | ||||||
9. Frequency of dissemination | ||||||
Air transport statistics are published monthly 120 days (four months) after the reference month with being preliminary until publishing the annual results. | ||||||
10. Accessibility and clarity | ||||||
10.1 Dissemination format - News release | ||||||
Air transport in Italy. Year 2010 - Anno 2010 Air transport in Italy. Year 2015 - Anno 2015 Air transport in Italy. Year 2012 - Anno 2012 Air transport in Italy. Year 2013 - Anno 2013 Air travel in Italy. Year 2011 - Anno 2011 Air transport in Italy. Year 2009 - Anno 2009 | ||||||
10.2 Dissemination format - Publications | ||||||
Noi Italia 2014: il volume (2014) Annuario statistico italiano 2018 (2018) Annuario statistico italiano 2015 (2015) Annuario statistico italiano 2016 (2016) Annuario statistico italiano 2017 (2017) Annuario statistico italiano 2014 (2014) Annuario statistico italiano 2013 (2013) Compendio statistico italiano (2013) | ||||||
10.3 Dissemination format - online database | ||||||
Time series - http://seriestoriche.istat.it/index.php?id=18&L=1 I.Stat - http://dati.istat.it/?lang=en | ||||||
10.4 Dissemination format - microdata access | ||||||
Not applicable to air transport statistics. | ||||||
10.5 Dissemination format - other | ||||||
Tables: Trasporto aereo. Anni 2003-2009 Conto Nazionale delle Infrastrutture e dei Trasporti - Anni 2010-2011: Ministry of infrastructure and transport http://www.mit.gov.it/mit/site.php?p=cm&o=vd&id=2265 Conto Nazionale delle Infrastrutture e dei Trasporti - Anni 2015-2016: Ministry of transport http://www.mit.gov.it/sites/default/files/media/pubblicazioni/2017-07/Libro%20CNIT_2015-2016%20bassa%202.pdf Eurostat (Statistical office of the European Union) http://ec.europa.eu/eurostat/data/database Conto Nazionale delle Infrastrutture e dei Trasporti Anni 2012 e 2013: Ministry of infrastructure and transport http://www.mit.gov.it/mit/mop_all.php?p_id=19370 Conto Nazionale delle Infrastrutture e dei Trasporti - Anni 2009-2010: Ministry of infrastructure and transport http://www.mit.gov.it/mit/site.php?p=cm&o=vd&id=1858 Conto Nazionale delle Infrastrutture e dei Trasporti - Anni 2013-2014: Ministry of infrastructure and transport http://www.mit.gov.it/mit/mop_all.php?p_id=24349 | ||||||
10.6 Documentation on methodology | ||||||
The survey methodology implements the EU regulation 437/2003. Recently, new variables have been added. Indeed, from 2018 data, Istat ask New variables to the Airports per flight: Code of commercial flight, Date/Hour, ICAO Origin/Final Destination, ICAO First stop, ICAO Second stop, ICAO Third stop, New Type of service: Scheduled, Charter for passengers and freight, General Aviation (Aerotaxi), Deviated flight, Technical stops, Arriving/Departing Adults, Childs and Infants, per Origin/Destination and stops and freight per O/D and stops and mail per O/D and stops Errors and Missing data: - Improving harmonization on units and/or variables (Total passengers = Adults + Children + Infant) Distinguishing a systematic error from a random one, Mirror checks (following slides...), Missing values within Record Linkage (on Transits, on some minor airports, on Flights) - Survey data to integrate missing on Transit - Record Linkage - Mirror checks to improve quality | ||||||
10.7 Quality management - documentation | ||||||
The Istat Information system on quality of statistical production processes SIQual (http://siqual.istat.it/SIQual/lang.do?language=UK) contains information on the execution on Istat statistical production processes and on activities developed to guarantee quality of the produced statistical information. For Details: http://siqual.istat.it/SIQual/visualizza.do?id=5000072&refresh=true&language=EN | ||||||
11. Quality management | ||||||
11.1 Quality assurance | ||||||
Since the 90s Istat adopted a systematic approach to ensure quality in both statistical information and service to the community. For this purpose, the Italian National Institute of Statistics has defined a quality policy providing itself with appropriate tools as well as management changes to carry it out. Istat quality policy is aimed at the improvement of statistical outputs and processes through the development of appropriate methodologies and tools as well as an appropriate scientific and technical support, provided to the personnel directly involved in the production and dissemination of statistical information. Istat quality policy is coherent with the European framework developed by Eurostat, taking up its main principles and definitions stated in the European Statistics Code of Practice and useful to ensure and strengthen the accountability and governance of the European Statistical System and of the National Statistical Systems. For details: https://www.istat.it/en/organisation-and-activity/institutional-activities/quality-commitment | ||||||
11.2 Quality management - assessment | ||||||
Implementation and compliance with the SDMX standards: Yes we use SDMX Converter. | ||||||
12. Relevance | ||||||
12.1 Relevance - User Needs | ||||||
Our users are: - our respondents, i.e airport management companies - Transport Department, Universities in the world, air companies (Ryanair, Alitalia, etc..), Assaeroporti as external bodies - National Account and consuption prices index sectors of Istat | ||||||
12.2 Relevance - User Satisfaction | ||||||
Istat is constantly interested in understanding who the users of the statistics it produces are, what the information needs are, whether they match production and if the statistics produced satisfy users. To this aim, together with the analysis of user requests received through the Web Contact Center service, tools for direct consultation were developed, such as the annual online survey of customer satisfaction and indirect tools such as analysis of accesses and of users' browsing paths on the web site. | ||||||
12.3 Completeness | ||||||
Datasets A1 and B1- possibility to identyfy the true first origin/ final destination of a passenger: It can be possible but only on the ground of the data included on the dataset A1 and B1. In practice, this is a difficult problem to solve. | ||||||
13. Accuracy | ||||||
13.1 Accuracy - overall | ||||||
Maximum | ||||||
13.2 Sampling error | ||||||
Not applicable for air transport data collection. | ||||||
13.3 Non-sampling error | ||||||
The quality actions to control unit nonresponse are: Telephone follow-ups Special care in writing clear instructions to fill-in questionnaires The quality actions to control the sources of processing error (data entry, coding, editing and imputation) are: Evaluation of editing and imputation impact on final estimates Evaluation of types of errors (item nonresponse, systematic errors, random errors, outliers) Supervising activities of operators in charge of editing and imputation Evaluation of editing and imputation impact on microdata Debriefing operators in charge of editing and imputation Storage of row data Editing and imputation procedures are used to correct for item nonresponse and measurement errors Data are validated to the following actions: Coherence control with data from other surveys or sources Coherence control with previous data of the same survey | ||||||
14. Timeliness and punctuality | ||||||
14.1 Timeliness | ||||||
All the statistics required by the provisions of the Regulation 437/2003 are transmitted to Eurostat 6 months after the reference quarter. Difficulties to respect deadline for data transmission: We usually respect T+6 months. It isn’t possible T+5. | ||||||
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. | ||||||
15. Coherence and comparability | ||||||
15.1 Comparability - geographical | ||||||
Georeferencing air routes | ||||||
15.2 Comparability - over time | ||||||
Length of comparable time series:
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15.3 Coherence - cross domain | ||||||
Yes with an informatic application | ||||||
15.4 Coherence - internal | ||||||
Yes with an informatic application | ||||||
16. Cost and Burden | ||||||
About costs, we haven't external services, so our costs are internal. The survey has 4,3 human resources per year The burden is the same for these last years. | ||||||
17. Data revision | ||||||
17.1 Data revision - policy | ||||||
Not applicable | ||||||
17.2 Data revision - practice | ||||||
Not applicable | ||||||
18. Statistical processing | ||||||
18.1 Source data | ||||||
Dataset A1 – Data Suppliers (Passengers on board/Freight and mail on board): YES Aircraft Information in A1: Airports Seats information information in A1: technical data from airports Dataset B1 –Data Suppliers (Passengers carried/Freight and mail loaded/unloaded): YES Datasets A1 and B1 - Use of Air Waybill Data as information source of freight data: NO Dataset C1 – Bodies that supply the direct transit information to the CNA: Airports Dataset C1 – Bodies that supply the commercial and total aircraft movement to the CNA: Airports | ||||||
18.2 Frequency of data collection | ||||||
Frequency of data collection is Monthly | ||||||
18.3 Data collection | ||||||
Dataset A1 – Data supplier’s information sources( Passengers on board/ Freight and mail on board) Dataset A1 – Data transmission to CNA – level of aggregation, system and periodicity (Passengers on board/ Freight and mail on board) Dataset B1 – Data supplier’s information sources (Passengers carried/ Freight and mail loaded/unloaded) Dataset B1 – Data transmission to CNA – level of aggregation, system and periodicity(Passengers carried/ Freight and mail loaded/unloaded) Datasets A1 and B1 - OFOD data derived from FS data or collected separately by the data supplier: FS (A1) and OFOD (B1) are collected separately | ||||||
18.4 Data validation | ||||||
Data validation procedure :
Description of consistency checks:
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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: It’s often necessary to undertake transcodification. Problems on data compilation, validation and delivery:
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18.6 Adjustment | ||||||
Not applicable for air transport data collection. | ||||||
19. Comment |