For example and presuming an annual subscription, the FAA will ship you a complete set of fresh en route charts every 56 days, or every other AIRAC cycle.
Charts are revised based on the AIRAC date and sent in the respective revision cycle (typically 14 days) with an effective date as appropriate.
AIRAC stands for Aeronautical Information Regulation And Control.
Annex 15 includes a list of what should be covered by AIRAC.
Fundamentally, AIRAC is a quality control process to ensure coordination of changes within the global airspace system.
Amendments to the Aeronautical Information Publication (AIP, AIP AIRAC
While it can seem like it's every other day, GPS databases are updated every 28 days (one AIRAC
Since GPS databases are tied to AIRAC
cycles on a predictable 28 day schedule, the revision dates can be added to your calendar.
A recent survey by AIRAC (1985) found that only 17 percent of consumers nationwide had contacted an insurance agent or company to get a quote on auto insurance in the past year.
AIRAC (1985) has found that "people you know" is most often mentioned (74 percent of the time) by consumers as a source of information in shopping for auto insurance.
Purpose of the service is to provide navigational data for a pair of aircraft Airbus A-319 115CJ covering the track structure and flight operations in accordance with the published deadlines regular cycle AIRAC
(Aeronautical Information Regulation and Control).
The navigation data, which are based on global aeronautical information, are updated every 28 days according the AIRAC
cycle and can be customized to specific routes and for the use in any type of aircraft.