Air Ground Data Link VHF Airline Communications and Reporting System (ACARS) Preliminary Test Report
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1995-02-01
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NTL Classification:NTL-AVIATION-Air Traffic Control
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Abstract:An effort was conducted to determine actual ground-to-air, and air-to-ground
performance of the Airline Communications and Reporting system (ACARS), Very
High Frequency (VHF) Data Link System. Parameters of system throughput, error
rates, and availability were measured by tabulating statistics of messages
ranging from 2 to 150 bytes in length. The intervals of transmission were
developed based on anticipated air traffic service (ATS) requirements for
tactical air traffic control (ATC) messages and their associated replies.
Overall, the average round trip message delay fell in the range of 10 to 20
seconds, with 5 out of approximately 2300 messages lost.
Aeronautical Radio Inc. (ARINC) did not endorse these tests, indicating that
the Federal Aviation Administration (FAA) tests did not take advantage of the
capabilities of the ACARS network which has been optimized for airline use.
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