HighFrequencyDataLink


             urn:aero:airm:1.0.0:ConceptualModel:Subjects:BaseInfrastructure:CommunicationInfrastructure:HighFrequencyDataLink

A constituent mobile subnetwork of the aeronautical telecommunication network (ATN), operating in the aeronautical mobile (R) high frequency bands. In addition, the HFDL may provide non-ATN functions, such as direct link service (DLS). The HFDL system must enable aircraft to exchange data with ground-based users.

Source: ICAO Annex 10, Vol. III, Second Edition,
Abbreviations: HFDL