Minutes of en-route ATFM delay per flight
|1.1 Contact organisation||EUROCONTROL: The European organisation for the safety of air navigation.|
|1.2 Contact organisation unit||Directorate Single Sky - Performance Review Unit (DSS/PRU)|
|1.3 Contact name||Performance Review Unit - EUROCONTROL|
|1.5 Contact mail address||96 Rue de la Fusée|
|1.6 Contact e-mail address||NSA-PRU-Support@eurocontrol.int|
|1.7 Contact phone number||+32 2 729 39 56|
|2. Metadata update|
|2.1. Metadata last certified||not applicable|
|2.2. Metadata last posted||01 November 2016|
|2.3. Metadata last update||01 November 2016|
3. Statistical presentation
3.1. Data description
Please note that software release 20.0 of the Network Manager on 04 April 2016 introduced a change in the computation of ATFM delay for operational purposes. ATFM delays on this web page are based on this new computation from 04 April 2016 onwards. See the Source data section below for more information on the changes in NM release 20.0.
The measure provides an indication of ATFM delays on the ground due to constraints en route.
In accordance with EU legislation, Single European Sky Area FABs are required to adopt performance targets contributing adequately to and be consistent with the EU wide targets. The capacity KPI for the second reference period is the en route ATFM delay per flight.
In Europe, when traffic demand is anticipated to exceed the available capacity in en route airspace or at airports, Air Traffic Control (ATC) units may request the local Flow Management Position (FMP) to instigate an Air Traffic Flow Management (ATFM) measure, or regulation. Aircraft expected to arrive during a period of congestion are given Air Traffic Flow Management delay at their departure airport, under the authority of the Network Manager, in order to regulate the flow of traffic into the constrained downstream en route sector or airport, thus ensuring safety. The resulting ATFM delays are calculated as the difference between the estimated take-off time calculated from the filed flight plan including updates and the calculated take-off time allocated by the central unit of ATFM. The reason for the regulation is indicated by the responsible Flow Management Position (FMP). The delay is attributed to the FIR containing the reference location of the most constraining capacity constraint.
En route ATFM delay has been in use as a commonly agreed proxy for en route capacity shortfalls since 1999. The calculation of ATFM delays is based on a well established and commonly accepted algorithm and is compliant with the KPI definition in the EU legislation.
3.2. Classification system
En route ATFM delay per flight is classified per Flight Information Region (FIR) within the Single European Sky Area.
For the monitoring of FAB Performance targets, the FAB is considered as the aggregation of the individual FIRs belonging to the Member state within the FAB
|FAB Name||FIRs included||FMPs|
|Baltic FAB||EPWWFIR, EYVLFIR, EYVLUIR||EPWW2012, EYVCFMP, EPWWFMP|
|BLUE MED FAB||LCCCFIR, LCCCUIR, LGGGFIR, LGGGUIR, LIBBFIR, LIBBUIR, LIMMFIR, LIMMUIR, LIRRFIR, LIRRUIR, LMMMFIR, LMMMUIR||LIBBFMP, LGGGFMP, LGMDFMP, LCCCFMP, LMMMFMP, LIRRFMPS, LIRRFMPN, LIRRFMPC, LIMMFMP, LIMMFMPA, LIMMFMPE, LIMMFMPT, LIMMFMPW, LIPPFMP, LIPPFMP1, LIRRFMP|
|DANUBE FAB||LBSRFIR, LRBBFIR||LBSRFMP1, LRBBFMP1, LRBBFMP2, LRBCFMP, LRCKFMP, LRCLFMP, LBSRFMP2, LRARFMP, LBWRFMP, LBSRFMP,LRBBFMP|
|DK-SE FAB||EKDKFIR, ESAAFIR||EKDKFMPE, EKDKFMPW, ESMMFMP, ESMMLOW, ESOSFMP, ESUNFMP, EKDKFMP, EKCHTMA|
|FABEC||EBBUFIR, EBURUIR, EDGGFIR, EDMMFIR, EDUUUIR, EDVVUIR, EDWWFIR, EHAAFIR, LFBBFIR, LFEEFIR, LFFFFIR, LFFFUIR, LFMMFIR, LFRRFIR, LSASFIR, LSASUIR||EBBUFMP, EDBBFMP, EDBBFMP1, EDFFFMP, EDGGFMP1, EDGGFMP2, EDLLFMP, EDLLFMP1, EDMERGE, EDMMFMP, EDMMFMPA, EDMMFMPE, EDMMFMPN, EDMMFMPS, EDUUFMP, EDUUFMPC, EDUUFMPE, EDUUFMPS, EDUUFMPW, EDWWFMP, EDYYFMP, EHAAFMP, LFBBAPP, LFBBFMP, LFBBFMPL, LFBBFMPU, LFBBNU, LFBBSU, LFEEAPP, LFEEFMP, LFFFAD, LFFFFMP, LFFFFMPE, LFFFFMPW, LFMMAPP, LFMMEL, LFMMEU, LFMMFMP, LFMMFMPE, LFMMFMPL, LFMMFMPU, LFMMFMPW, LFMMWL, LFMMWU, LFRRAPP, LFRRFMP, LSAZCTL, LSAGFMP, LSAGFMPL, LSAGFMPU, LSAGLFMP, LSAGUFMP, LSAZFMP, LSAZLFMP, LSAZCFL, LFRRFMP1|
|FAB CE (SES RP2)||LDZOFIR, LHCCFIR, LJLAFIR, LKAAFIR, LOVVFIR, LZBBFIR||LJLAFMP, LOVVFMP, LZBBFMP, LKAAFMPU, LKAAFMPL, LKAAFMP, LDZOFMP, LHCCFMP|
|NEFAB||EETTFIR, EFINFIR, EFINUIR, ENOBFIR, ENORFIR, EVRRFIR||EVRRFMP, ENTRFMP, ENSVFMP, ENOSFMP, ENBDFMP, EFPSFMP, EFINFMP, EETTFMP, EFESFMP, ENOSEFMP, ENOSWFMP|
|SW FAB||GCCCFIR, GCCCUIR, LECBFIR, LECBUIR, LECMFIR, LECMUIR, LPPCFIR||LECBFMP1, LECMFMPN, LECMFMPS, LECPFMP, GCCCFMP, LECBFMP, LECSFMP, LPPCFMP, LECMFMP|
|UK-Ireland FAB||EGPXFIR, EGPXUIR, EGTTFIR, EGTTUIR, EISNFIR, EISNUIR||EGTCFMP, EIDWFMP, EGTTOLYM, EGTTFMP1, EGTTFMP, EGTCOLYM, EISNFMP, EGPXFMP1, EGPXFMP, EGCCFMP|
3.3. Sector coverage
The measures pertain to the Air Transport and Air Traffic Management Sector of the economy.
3.4. Statistical concepts and definitions
- ATFM delays
- “ATFM delay” is defined as the duration between the last Estimated Take-Off Time (ETOT) and the Calculated Take-Off Time (CTOT) allocated by the Network Manager. ATFM delay comprises both Airport ATFM delay and En route ATFM delay. This indicator is solely concerned with En route ATFM delay.
- The delay is truncated to minutes.
- All the IFR flights which have filed a flight plan and have entered the area of responsibility of the relevant ANSP(s) are taken into account.
- Each flight is only counted once, regardless of its trajectory.
Attribution of Delay
ATFM delay to which a flight is subjected is defined to have as cause the most penalizing ATFM regulation which affects it. Depending of the type and the entity responsible for the reference location protected by the ATFM regulation the ATFM delay is classified as either an airport or an en route ATFM delay and attributed to the FIR containing the reference location .
Each ATFM regulation also comprises a designator referring to the cause of delay which can be used in further analysis.
3.5. Statistical unit
The statistical unit is the State/ ANSP to which the ATFM delays are attributed.
3.6. Statistical population
The statistical population comprises the States in the Single European Sky Area.
3.7. Reference area
The reference area is the Single European Sky Area.
3.8. Time coverage
2012 is the first year for which data is presented.
3.9. Base period
4. Unit of Measure
5. Reference period
- The first reference period (RP1) covers the calendar years 2012 to 2014 inclusive.
- The second reference period (RP2) covers the calendar years 2015 to 2019 inclusive.
Unless decided otherwise, the following reference periods shall be of five calendar years.
6. Institutional Mandate
Legal acts and agreements are established in the Performance Regulation (691/2010).
- The information is disseminated in accordance with Article 21 of the Performance Regulation (691/2010).
- The information is disseminated in accordance with Article 22 of Commission Implementing Regulation (EU) No 390/2013.
8. Release policy
8.1. Release calendar
En route ATFM delay data is released 12 times per year, once per month.
8.2. Release calendar access
8.3. User access
Information is disseminated to the general public via the EUROCONTROL website.
9. Frequency of dissemination
En route ATFM data is published monthly with the annual performance aggregate being available in January of the following year.
10. Dissemination format
The information is available on the EUROCONTROL website.
11. Accessibility of documentation
11.1. Documentation on methodology
As per the pertaining regulations (see Institutional Mandate).
For technical questions not addressed in Statistical processing please contact: NSA-PRU-Support@eurocontrol.int.
Additional definitions of the terms used in the frame of the this KPI are available in the Glossary.
11.2. Quality documentation
There is no specific documentation on procedures applied for quality management and quality assessment.
12. Quality Management
12.1. Quality assurance
The data is provided by the Network Manager and as such it is their responsibility to perform any quality assurance activities.
12.2. Quality assessment
Data is validated by random quality checks, e.g. missing data for given a day, adherent data, etc. Any issues are reported to the Network manager who works with the EUROCONTROL Performance Review Unit to resolve them.
The information is published for performance monitoring purposes in accordance with the relevant EU legislation.
The data is collected for the entire Single European Sky Area.
14. Accuracy and reliability
14.1. Overall accuracy
The en route ATFM delay is the delay calculated by the central unit of ATFM as defined in Commission Regulation (EU) No 255/2010. This calculation is based on a well established methodology, which has been in place since 1999.
It is assumed that the data provided is accurate, given the caveats mentioned in sections 3.4 and 3.6.
14.2. Sampling error
There is no sampling and therefore no sampling error.
15. Timeliness and punctuality
The full set of Minutes of en route ATFM delay per flight is published each month - in general between 14 and 16 days after the end of the month in question.
The internal databases are updated daily. The statistical processing is performed once per month.
16.1. Comparability — geographical
16.2. Comparability over time
Comparisons over time are valid.
17.1. Coherence — cross domain
ATFM delays is calculated relative to the flight plan.
Although not fully cohered, the delay reported by aircraft operators to CODA under the corresponding IATA delay categories shows a high correlation with the ATFM delay calculated by the Network Manager. It should be noted that the delay reported by aircraft operators relates to airline schedules rather than flight plan.
17.2. Coherence — internal
Data is fully coherent from an internal perspective.
18. Cost and burden
19. Data revision
The data revision policy has not yet been defined.
20. Statistical processing
20.1. Source data
- En route ATFM delay per flight targets
- The EU-wide target is an average of 0.5 minutes per flight ATFM en route delay in 2014 and for all years in RP2 (2015-2019)
- National or FAB performance targets are contained within the respective performance plans.
- Actual en route ATFM delay
- The Network Manager provides this data.
- Please note that the delays caused by READY to Depart (REA) messages and ATFM slot extensions were excluded from the
- ATFM delay computation with NM release 20 (4 April 2016) which reduces the overall amount of computed ATFM delay.
- More information on the adjusted ATFM delay computation as of NM release 20.0 from 4 April can be found here:
- NM release 20.0 - 4 April 2016 - FB750-Delay Calculation improvements.
20.2. Frequency of data collection
Data is collected for each individual flight in real time.
20.3. Data collection
Data is collected and compiled by the Network Manager.
20.4. Data validation
Data validation is the responsibility of the Network Manager.
20.5. Data compilation
The Network Manager aggregates the data for the different FIRs. The FIRs monitored during the second reference period are referred to as the SES RP2 Area.
Corrections may be made when issues are discovered as described in the Quality Assessment section of this document.
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This data is published by the Performance Review Body (PRB) of the Single European Sky. Every effort has been made to ensure that the information and analysis contained on this website are as accurate and complete as possible. Despite these precautions, should you find any errors or inconsistencies we would be grateful if you could please bring them to the Performance Review Unit’s attention.
The information may be copied in whole or in part providing that the copyright notice and disclaimer are included. The information may not be modified without prior written permission from the PRB. The views expressed herein do not necessarily reflect the official views or policy of EUROCONTROL or of the European Commission, which make no warranty, either implied or express, for the information contained on this website, neither do they assume any legal liability or responsibility for the accuracy, completeness or usefulness of this information. The PRB reserves the right to change or amend the information provided at any time and without prior notice.