En-Route ATFM Delay Dataset (FIR)

Please note that software release 20.0 of the Network Manager on 04 April 2016 introduced a change to improve the accuracy of the ATFM delay calculation for operational purposes. For more information on the change in methodology click here.

Data description

The en-route ATFM delay provides an indication of ATFM delays on the ground due to constraints en-route.

In Europe, when traffic demand is anticipated to exceed the available capacity in en route centres 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 ATFM 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 calculation of En-route ATFM delay is based on a well established and commonly accepted algorithm and has been in use as a commonly agreed proxy for en-route capacity shortfalls since 1999.

ATFM delay computation

The 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 most constraining ATC unit.

Please note that the delays caused by READY to Depart (REA) messages and ATFM slot extensions were included in ATFM delays until NM release 20.0. As of 4 April 2016, delays due to REA messages and slot extensions are not included any longer which reduces the amount of computed ATFM delay.

Traffic computation

The number of flights is based on Flight Information Region (FIR) boundaries (which are not necessarily coincidental with the airspace controlled by the respective ANSP).

FAB definitions

The FAB level information is based on an aggregation of Flight Information Regions (FIRs) (ENTITY_TYPE = FAB (FIR)).

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 LDZOFIR, LHCCFIR, LJLAFIR, LKAAFIR, LOVVFIR, LQSBFIR, LQSBUIR, LZBBFIR  
FAB CE (SES RP1) LHCCFIR, LJLAFIR, LKAAFIR, LOVVFIR, LZBBFIR  
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

Column naming and types

Column name Data source Label Reason Group Column description Example
YEAR Network Manager YEAR   Reference year 2015
MONTH_NUM Network Manager MONTH   Month (numeric) 3
MONTH_MON Network Manager MONTH_MON   Month (3-letter code) MAR
FLT_DATE Network Manager FLT_DATE   Date of flight 17/03/2015
ENTITY_NAME PRU ENTITY_NAME   Entity name FAB CE
ENTITY_TYPE PRU ENTITY_TYPE   Type of the entity to which the data relates (ANSP, FAB, AREA) FAB (AUA)
FLT_ERT_1 Network Manager Flights   Total number of flights within the respective airspace 3853
DLY_ERT_1 Network Manager En-route ATFM delay   Minutes of en-route ATFM delay 0
DLY_ERT_A_1 Network Manager A - Accident/Incident ER Disruptions Minutes of en-route ATFM delay with delay code A - Accident/Incident 0
DLY_ERT_C_1 Network Manager C - ATC Capacity ER Capacity (ATC) Minutes of en-route ATFM delay with delay code C - ATC Capacity 0
DLY_ERT_D_1 Network Manager D - De-icing ER Weather Minutes of en-route ATFM delay with delay code D - De-icing 0
DLY_ERT_E_1 Network Manager E - Equipment (non-ATC) ER Disruptions Minutes of en-route ATFM delay with delay code E - Equipment (non-ATC) 0
DLY_ERT_G_1 Network Manager G - Aerodrome Capacity ER Capacity Minutes of en-route ATFM delay with delay code G - Aerodrome Capacity 0
DLY_ERT_I_1 Network Manager I - Industrial Action (ATC) ER Disruptions (ATC) Minutes of en-route ATFM delay with delay code I - Industrial Action (ATC) 0
DLY_ERT_M_1 Network Manager M - Airspace Management ER Capacity Minutes of en-route ATFM delay with delay code M - Airspace Management 0
DLY_ERT_N_1 Network Manager N - Industrial Action (non-ATC) ER Disruptions Minutes of en-route ATFM delay with delay code N - Industrial Action (non-ATC) 0
DLY_ERT_O_1 Network Manager O - Other ER Disruptions Minutes of en-route ATFM delay with delay code O - Other 0
DLY_ERT_P_1 Network Manager P - Special Event ER Events Minutes of en-route ATFM delay with delay code P - Special Event 0
DLY_ERT_R_1 Network Manager R - ATC Routeing ER Capacity Minutes of en-route ATFM delay with delay code R - ATC Routeing 0
DLY_ERT_S_1 Network Manager S - ATC Staffing ER Staffing (ATC) Minutes of en-route ATFM delay with delay code S - ATC Staffing 0
DLY_ERT_T_1 Network Manager T - Equipment (ATC) ER Disruptions (ATC) Minutes of en-route ATFM delay with delay code T - Equipment (ATC) 0
DLY_ERT_V_1 Network Manager V - Environmental Issues ER Capacity Minutes of en-route ATFM delay with delay code V - Environmental Issues 0
DLY_ERT_W_1 Network Manager W - Weather ER Weather Minutes of en-route ATFM delay with delay code W - Weather 0
DLY_ERT_NA_1 Network Manager NA - Not specified ER Disruptions Minutes of en-route ATFM delay with delay code NA - Not specified 0
FLT_ERT_1_DLY Network Manager FLT_ERT_1_DLY   Number of en-route ATFM delayed flights 0
FLT_ERT_1_DLY_15 Network Manager FLT_ERT_1_DLY_15   Number of en-route ATFM delayed flights (>15 min.) 0