This is an umbrella term that covers various technologies, systems, and mandates, including CPDLC, ADS-C, FANS, ATN-B1, LINK 2000+ (SESAR 2020), and more. DLC refers to the aircraft’s ability to communicate with Air Traffic Control (ATC) using Data Link functions –specifically, Controller-Pilot Data Link Communications (CPDLC) and Automatic Dependent Surveillance –Contract (ADS-C).
DLC systems enhance efficiency and safety resulting in lower costs overall for civil and commercial aviation. Some areas of the world are already requiring that aircraft be DLC capable, and a Letter of Authorization (LOA) is required for DLC operations.
