Additional ASMA time

The document describing the methodology for the calculation of the additional Arrival Sequencing and Metering (ASMA) time can be downloaded here.

This methodology is the result of a review process of the previous methodology (used up to December 2022 in the EUROCONTROL Performance Review System).

The review was done in collaboration with stakeholders through the creating of a working group. All details about the review work can be found here.

Results with the old methodology up to December 2022 are available for consultation in our download page and were used in performance reports up to and including PRR 2022.