European Route Network Improvement Plan (ERNIP) - Monitoring Report - AIRAC 2001

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.

Potential savings

Despite of no airspace enhancements implemented during AIRAC 2001, but considering the impact of the airspace design improvements put in place since AIRAC 1901 in connection with changing traffic patterns and structure, the additional, potential savings offered during AIRAC cycle 2001 amount to:

198,000 NMs

flown less on shortest available route

1,188 tonnes

less fuel used

3,960 tons

less CO2 emitted



Real-world performance

Based on our filed flight plan indicator, the actual situation during AIRAC 1913 was:

532,000 NMs

flown more compared to shortest available route

3,192 tonnes

more fuel used

10,640 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 2001