The AIRAC cycle
Charts, procedures and navigation data update together on a fixed worldwide schedule called AIRAC.
The cycle
AIRAC effective dates are fixed worldwide, 28 days apart.
Why it matters
Everyone changes to the new data on the same date, so the system stays consistent.
Track it
Use the AIRAC tool for the current cycle and the countdown to the next.
Regulations cited
Fly GACA is an independent educational platform. It is not affiliated with, endorsed by, or operated by the General Authority of Civil Aviation (GACA) or the Government of the Kingdom of Saudi Arabia. The official and authoritative source for all civil aviation regulations, publications, and aeronautical information is always GACA. Always verify against the latest official GACA publication at gaca.gov.sa.