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A Date With AIRAC

Maybe were too busy focusing on the forest and the trees that the dirt making up the foundation of the arbors is ignored. Or perhaps its the elephant in the room no one discusses. Instructors dont teach it because they dont understand the opaque system themselves-cant teach something you dont know. Whatever the cause, many pilots have a poor understanding of how aeronautical information travels through the system and how charts are updated.

Gemini Sparkle

Key Takeaways:

  • Aeronautical Information Regulation And Control (AIRAC) is an internationally agreed-upon 28-day cycle for states to coordinate and publish aeronautical information, ensuring global consistency and safety in aviation data.
  • The AIRAC cycle dictates a series of dates, including a crucial "effective date" (every 28 days), by which scheduled changes to procedures and information are implemented and charts/databases become legally valid.
  • Chart updates differentiate between changes impacting 14 CFR Part 97 instrument procedures (which carry an effective date and should not be used before it) and other updates like D-NOTAMs or cartographic changes (which can be used upon receipt).
  • Pilots, especially instrument-rated, are responsible for updating their charts and navigation databases by the AIRAC effective date to ensure access to current, accurate, and legally compliant aeronautical information.
See a mistake? Contact us.

Maybe we’re too busy focusing on the forest and the trees that the dirt making up the foundation of the arbors is ignored. Or perhaps it’s the elephant in the room no one discusses. Instructors don’t teach it because they don’t understand the opaque system themselves—can’t teach something you don’t know. Whatever the cause, many pilots have a poor understanding of how aeronautical information travels through the system and how charts are updated.

Why fend off paper cuts every few weeks or get the notice to update your data every time you fire up your electronic flight bag? Why are Jepps updated every two weeks while government charts update at four weeks? What about databases? Why do some charts have effective dates and other don’t?

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