Aircraft Communication Addressing and Reporting System
Aircraft Communication Addressing and Reporting System (or ACARS) is a digital
datalink system for transmission of small messages between
aircraft and ground stations via
radio or
satellite. The protocol was defined in the
1970s and uses
telex formats. It will be superseded by the Aeronautical Telecommunications Network (ATN) protocol.
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ACARS
ARINC Communications Addressing and Reporting System