Advice on Post Operations Performance Adjustment Process

26 January 2018

This page highlights some changes to the process and advises on how to use the Post Operations Performance Adjustment Process

National Supervisory Authorities reviewed the first year of the adjustment process and agreed to some updates. The main changes are:

  • A year-end step that closes the dataset for the whole year in time for reporting. NM’s proposal for outstanding cases would be in the final dataset, published end April. NM would highlight any cases that did not go through full CDM.  Any objections would be handled via NSA/EC during the formal performance review. (See page vi);
  • An increase in the elapsed time for submitting proposals (from 1 to 2 months). The exception is December - cases cannot be submitted beyond end January Year +1. (See page iv);
  • Submitters now have the same time as third parties to reply to NM’s proposals (1 month) during CDM (See page v);
  • NM will publish a  dataset twice per year (see page v).

The updated process has immediate effect.


The page is targeted at operational stakeholders who believe there is an issue with archived ATFM data and would like it corrected.

It explains:

(1) How to communicate issues to the Network Manager. 

(2) Who can submit (communicate) those issues.

(3) How to check the status of a submission.

(4) How to NM will handle submissions.

(5) How to contest a decision on a submission.

(6) How to access the Controlled dataset.

If you have other questions, please let us know:

(1) How to communicate issues to the Network Manager  

(2) Who can submit (communicate) ATFM delay issues

  • NM expects that the person responsible for (airport/ANSP) ATC unit performance or a nominee will submit ATFM delay issues.
  • NM will only recognise one individual, plus an alternate, per ATC unit (airport/ANSP).
  • For a very first submission, the unit must inform NM of the responsible people through a formal letter.
  • NM will log these contact points and only accept submissions from these individuals.   
  • The letter should be from a senior manager of the organisation which should include:
    • name of senior manager, organisation (ANSP), position, function/job title, postal address, contact telephone number and e-mail address
    • nominated focal points name, organisation, position, function/job title, postal address, contact telephone number and e-mail address

(3) How to check the status of a submission

  • We are working on a status sheet for the website.
  • In the short term, please contact for the latest news.
  • But we’d expect to be liaising with you on the case, so normally you should be aware.
  • Remember the timings for each step in the process…
    • Acknowledgement of initial request – 3 days[1]
    • Decision – a decision on each case is expected by the end of the month following submission.

(4) How NM will handle submissions

  • The Operational Analysis & Reporting team will run the process.
  • It will log the cases, change datasets and communicate with the stakeholders.
  • The Post Operations team will analyse the cases.
  • And it will contact you directly if there is need for further clarification of the case.

(5) How to contest a decision on a submission

  • Given the process is based on CDM, we don’t envisage this to happen often.
  • The CDM discussions should iron out most differences.
  • We will need to agree a short report when escalation is required to the NSA or NMB (TBD).

(6) How to access the Controlled dataset

  • We will produce an Excel file for each month.  This will contain the regulation data for the year to date.
  • It will only contain updated data that has passed the final process stage.
  • The file will identify the changed regulations that should match the change register.

[1] Office hours only.