Please update your Flash Player to view content.

Online Coordination

Online Coordination System activation for S16

Hellenic Slot Coordination Authority (HSCA) would like to announce that Online Coordination System (OCS) will be activated for S16 Scheduling Period starting Sunday 27th March 01:00 UTC, initially for the following coordinated airports:  

  • HER (Heraklion)
  • CHQ (Chania)
  • SKG (Thessaloniki)
  • RHO (Rhodos)
  • KGS (Kos)
  • CFU (Corfu)
  • JMK (Mykonos)
  • JTR (Santorini)

Days/Hours of OCS activation: Fridays 13:00 UTC until Mondays 05:30 UTC and Greek Bank Holidays.

 The following rules shall apply:

  • Requests must be for days 1000567 the times specified above.
  • Requests with Ground time longer than two (2) hours will not be accepted
  • Requests sent for operations must be at least eight (8) hours prior to the requested time of operation.  
  • Requests for operations for more than two (2) days after the current date will not be accepted.
  • Requests in unlinked format will not be accepted, unless otherwise entitled.
  • Requests for swaps will not be accepted.
  • For GA/BA flights PPR is needed in the SI section of the message as per GA/BA coordination procedures.
  • Closing hours of the airports that do not operate on 24 hours basis (JMK and JTR) are not shown in OCS. Slot requests/changes outside the operating hours of these airports will be rejected by the system, therefore aircraft operators should be informed about the airport closing hours at HSCA site

It is recommended that OCS feature should be used by all Air Carriers and GA/BA operators interested in receiving immediate and valid responses to their Ad Hoc Slot Requests/Changes/Deletions.

Please note that OCS is being activated first time for a Summer Scheduling Period and it will be in testing mode until further notice.  

In utilizing the OCS feature all relevant information for applying and access to OCS can be found in the link

Please note that all email correspondence concerning OCS will only be processed at This email address is being protected from spambots. You need JavaScript enabled to view it. and HSCA will not be held responsible for unprocessed requests sent to other email addresses.

For registered users of OCS tool who have not applied for access to Greek Airports and wish to access the above airports should contact ACL for receiving access rights This email address is being protected from spambots. You need JavaScript enabled to view it.

Thank you