Meet the Mandates



The aim of the EUROCONTROL Link 2000+ CPDLC mandate is to supplement voice communication between pilots and air traffic controllers, and to increase air traffic management (ATM) capacity by automating routine tasks whilst improving safety.

The Data Link Services (DLS) implementing rule targets airspace users operating above Flight Level 285 (28,500 feet) and Air Navigation Service Providers operating in the EU region. The baseline technology is ATN/VDL Mode 2


Commission Implementing Regulation (EU) 2015/310 of 26 February 2015 amending Regulation (EC) No 29/2009


  • European Airspace
  • Above Flight Level 285 (FL285) 28,500 feet
  • 05 February 2015, All ANSPs are ready
  • 05 February 2020, All aircraft are equipped (There is no longer a distinction between forward fit and retrofit)


  • Protected Mode-Controller Pilot Data Link Communications (PM-CPDLC)
  • Per ATN SARPS & ICAO 9705, partial implementation to support EUROCONTROL Link 2000+.
  • Data Link Initiation Capability (DLIC)
  • This service is initiated by aircrew on first contact with an ATC unit that supports data communications. It is a pre-requisite to the operational data-link services and allows flight plan/address association in the ATC system. The following information is provided to the ground system: airframe identification, aircraft identification, supported air-ground data-link services, departure and destination airports, and estimated off block time (EOBT), when available.
  • ATC Communication Management (ACM)
  • The ACM service supports the transparent transfer of data communications, in synchronization with the transfer of voice communications. It also retains the operational principle that there is only one controlling authority, and that the controlling authority is properly and unambiguously identified. (Current sector controller initiates this service to transfer ATC communications to next sector).
  • ATC Clearances (ACL)
  • Allows the request (aircrew) and delivery of (controller) enroute clearances such as level (including constraints based on time, position, vertical rate-of-change), heading, speed (IAS/Mach), direct route, and rate of climb/descent. The ACL service also enables SSR code change instructions and provides acknowledgements in both directions.
  • ATC Microphone Check (AMC)
  • Provides controllers with the capability to up-link an instruction for all aircraft to check that they are not inadvertently blocking a given voice channel.