Network Operations Report – April 2018

18 May 2018

Traffic in April 2018 increased by 5.1% compared to April 2017 and was close to the baseline forecast. Ten states added more than 50 flights daily to the network with Turkey, Poland and Germany as the top contributor.

Total ATFM delays increased by 105.3% in April 2018 compared to April 2017. En-route ATFM delays (31,946 min/daily) increased by 166.7% mainly due to ATC capacity and disruptions; airport ATFM delays (12,988 min/daily) increased by 31.1% mainly due to weather.

Highlights include:


  • En-route capacity delays in Karlsruhe UAC;
  • En-route ATC staffing issues in Maastricht UAC;
  • Marseille ACC industrial action during two weekends generated a total of 113,358 minutes of en-route ATFM delay in France;
  • Implementation of Extended Computer Display system in London TC.


  • Seasonal weather impacted operations at Amsterdam/Schiphol, Barcelona, London/Heathrow and London/Stansted airports;
  • There were capacity issues at Istanbul/Atatürk and Amsterdam/Schiphol airports;


  • On the 3 April the Network Manager suffered an outage of its technical system affecting primarily its ATFM and CCAMS operational services. Traffic patterns were disrupted between 12:00 and 18:00 UTC, with many flights incurring scheduled departure delays.

The average en-route ATFM delay per flight in the NM area in April was 1.07 min/flt, which is above the corresponding monthly guideline value of 0.33 min/flt. The average YTD en-route ATFM delay per flight in 2018 in the NM area is 0.58 min/flt which is above the corresponding guideline value of 0.23 min/flt.

The monthly Network Operations Report overview provides a high level view of the performance of the European ATM network, whilst the analysis provides a detailed view. To stay up-to-date on the latest network performance, subscribe to the Network Operations monthly report.


Network Manager Operational Performance team

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