The Collaboration Human Machine Interface (CHMI) is a standalone application which provides a graphical interface for the Network Operations systems allowing users to display data and graphical information (such as routes, route attributes, airspaces, flight plan tracks, etc.) via map displays. This real time information enables Collaboration Decision-Making (CDM) between all partners.

To accommodate most operational stakeholders' needs, several customised CHMI products have been developed:

  • CIAO - CHMI for Aircraft Operators
  • CIFLO - CHMI for Flow Management Positions
  • CIREN - CHMI for ENV Coordinators
  • CITO - CHMI for Airport Towers
  • CIAM - CHMI for Airspace Management Cells

The general procedures to be applied between EUROCONTROL and the user and for more information consult the CHMI User guides in the Network Operations library.


Related links

Access conditions

Invoices are payable before the token(s) can be activated


The access to the CHMI applications is restricted to organisations which are actively engaged in ATFM operations, aircraft operations – and related support services.

The access to the CHMI is subject to eligibility conditions, to conditions of use and to the signing of a NM agreement. Read the NM Agreements and Policies page and fully acquaint yourself with the NM Operations Security Rules, the NM Data Rules, and the Acceptable Behaviour Rules for Flight Planning and ATFCM Operations.

To subscribe to CHMI read the step-by-step guide or directly use the NM Service request form.

Hours of Operations

The CHMI is accessible 24 hours a day, 7 days a week.

Technical assistance is provided 24 hours a day, 7 days a week for first level support, and during office hours for 2nd level support.

Service Levels

We aims to provide high availability levels for the CHMI and it gives monthly reports on availability indicators to our stakeholder consultative groups concerned (ODSG or equivalent).

Availability levels do not include:

  • The communication networks used to access the product;
  • The interruptions due to a use of the product which does not conform to EUROCONTROL’s specifications;
  • The periods of planned outage and essential maintenance.

EUROCONTROL tries to keep interruptions to the service to a minimum. Interruptions may occur in the following cases:

  • When essential planned maintenance and testing might necessitate the Network Operations Systems to be taken out of service, EUROCONTROL always tries, but cannot guarantee, to notify the Customer at least forty-eight (48) hours in advance of planned interruptions to service.
  • In all other cases, it provides such notice as is reasonably practicable.
  • Information on NM Operations Systems maintenance windows is published on the EUROCONTROL Network Management website, in the Network Operations section.

Contribution Fees

The CHMI product is, in principle provided free of charge. However, contribution fees are levied to cover part of the token related costs.

EUROCONTROL provides up to two (2) tokens per organisation free of charge.

A one-time fee of €200 is charged for each additional token.

Each token is valid for a minimum of five (5) years to cater for technological, operational or contractual evolutions. After 5 years, EUROCONTROL will charge a new contribution fee when renewing the tokens with new technologies.

EUROCONTROL reserves the right to cancel the tokens which have not been used for six (6) months, for efficiency and security reasons. Should you require a new token after this cancellation, you will have to submit a new request via the NM Service request form. Any new access so requested and granted will be charged for.