European Route Network Improvement Plan (ERNIP) - Monitoring Report - AIRAC 1908

ERNIP Monthly report cover
ERNIP monitoring report background image

Our monthly European route network implementation plan (ERNIP) monitoring report provides an overview of the airspace design improvements applied by States during the past AIRAC cycle and an analysis of their potential and real world effects.

Highlights for AIRAC 1908


airspace improvement in AIRAC 1908 coordinated with the EUROCONTROL Network Manager


implementing States as part of SG BLACK.

Potential savings

The 142 improvement measures implemented since AIRAC 1808 could have led to:

123,000 NMs

flown less on shortest available route

738 tons

less fuel used

2,460 tons

less CO2 emitted



Real-world performance

Based on our filed flight plan indicator, the actual situation during AIRAC 1908 was:

650,000 NMs

flown more compared to shortest available route

3,900 tons

more fuel used

13,000 tons

more CO2 emitted



Key reasons

Potential causes having an impact on flight planning/ airline choices: 

  • Geopolitical (Ukraine, Libya and Syria);
  • Regulations due to capacity/ staffing problems in the network;
  • Traffic composition/ demand;
  • Industrial action;
  • Weather (several key ANSPs were affected by traffic re-routing);
  • Financial (fluctuation of route charges over Europe).

For more details, download our monitoring report.


Monitoring Report - AIRAC 1908