Controller-Pilot Data Link Communications (CPDLC)

Controller-Pilot Data Link Communications (CPDLC) is a text-based air-to-ground data link system. An aircraft equipped with CPDLC provides the flight crew and the controller the ability to communicate directly without using general broadcast. As a result, this system greatly reduces the number of communication errors between both parties, while simultaneously increasing overall flight safety.

As of February 05, 2020, the European Union Aviation Safety Agency (EASA) mandates that most aircraft above FL285 operating within European airspace are required to be equipped with CPDLC. However, EASA has deemed some aircraft permanently exempt; as well as, offering certain aircraft types extensions until February 05, 2022.

permanently exempt aircraft

The following aircraft are permanently exempt from the CPDLC mandate:

  • Aircraft in Annex I
  • Aircraft in Annex II with a CofA issued before February 05, 2020
Aircraft with extended deadline 

The following aircraft have an extended CPDLC compliance deadline of February 05, 2022:

  • Aircraft in Annex II with CofA issued after February 05, 2020
  • Aircraft in Annex III

Global’s Solution


Global is the owner of Federal Aviation Administration (FAA) Supplemental Type Certificate (STC)  ST04417CH and EASA STC  1074090 for the installation of Controller-Pilot Data Link Communications.

Installation of Spectralux Dlink+ with Iridium for the Aircraft Communications, Addressing, and Reporting System (ACARS) and Controller-Pilot Data Link Communications (CPDLC).