EUROCONTROL Guidelines for On-Line Data Interchange (OLDI)

These guidelines provide clarifications and best practices concerning the OLDI data exchanges for flights between air traffic control units by the use of electronic data transfer between flight data processing systems.

This edition of the guidelines is in direct support to the EUROCONTROL Specification for On-Line Data Interchange Edition 5.0. It includes implementation best practices and recommendations.


During the OLDI specification update cycle, the operational stakeholders identified a need for additional OLDI implementation material to help clarify the provisions contained in the OLDI specification Edition 4.3. The need to produce the OLDI guidance material ( the potential content and tentative planning) was presented to NETOPS and it has been agreed that the OLDI group to be tasked to draft the OLDI guidance material.

The development of the guidance material was organised as collaborative activity orchestrated by EUROCONTROL/NM with substantial contribution of Operational Stakeholders during the drafting and reviewing process.


EUROCONTROL Guidelines for On-Line Data Interchange (OLDI)