Lesson plan

System area code

In air traffic control, the system area code (SAC) is part of a unique identifier assigned to each system which uses the ASTERIX format. The Eurocontrol SuRveillance Data Exchange Task Force (RDE-TF) maintains these identifiers internationally and assigns them to regions such as countries, though sometimes more than one code is assigned within the same country, for example to distinguish between civilian and military uses. Within each country, it is the responsibility of the relevant air navigation service provider to allocate a system identification code (SIC); up to 256 of them for each SAC. In the Asterix protocol the SAC/SIC identifies the actual sensor from where the radar information is sent. The information being e.g. plot and track.

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Article summary

In air traffic control, the system area code (SAC) is part of a unique identifier assigned to each system which uses the ASTERIX format. The Eurocontrol SuRveillance Data Exchange Task Force (RDE-TF) maintains these identifiers internationally and assigns them to regions such as countries, though sometimes more than one code is assigned within the same country, for example to distinguish between civilian and military uses. Within each country, it is the responsibility of the relevant air navigation service provider to allocate a system identification code (SIC); up to 256 of them for each SAC. In the Asterix protocol the SAC/SIC identifies the actual sensor from where the radar information is sent. The information being e.g. plot and track.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.