Plain English Meaning
A long-established company that runs the radio network airlines and pilots use to send messages back and forth — especially when flying over oceans or remote regions where normal radio doesn't reach.
Full Definition
A private company, originally established by the airlines in 1929, that provides communication services and infrastructure to aviation. ARINC operates ground radio stations that relay messages between aircraft and airline operations, air traffic control, and weather services, particularly over oceanic and remote areas where direct VHF coverage is unavailable.
Context Anchor
Seen in weather and -planning when aircraft or other flight messages are being passed between an aircraft and ground services.