Following the trend over the past three years, total en-route ATFM delays continued to increase at a higher rate (+7.1% vs. 2016) than flights (+4.3% vs. 2016) leading to a further increase in the average en-route ATFM delay per flight in 2017.
There was a notable change in the underlying delay reasons. Whereas capacity/staffing and weather attributed delays increased further in 2017, there was a notable reduction in ATC disruption/industrial actions and events (ATC system upgrades) linked to performance improvements in France.
Share of controlled flights delayed by en-route ATFM regulations (%)
Overall, 8.4% of the controlled flights in the EUROCONTROL area were affected by ATFM delays in 2017.
Compared to 2016, the share of flights affected by en-route ATFM delays increased by 0.6 percent points to 5.3%.
At the same time, the share of flights affected by airport ATFM delays
decreased slightly from 3.2% in 2016 to 3.1% in 2017.
En-route ATFM delay by ANSP
Average en-route delay per flight was highest in Cyprus (mainly staffing and capacity related), followed by DSNA/France (capacity, strike and weather related) DFS/Germany and Maastricht Upper Area Control Centre/MUAC.
Despite the continued increase in traffic in 2017, horizontal flight efficiency improved compared to the same period last year. The efficiency of actual flight trajectories increased from 97.1% in 2016 to 97.3% in 2017.