2026-04-27 National

In September 2026, NAV CANADA, the air navigation service provider for Canada, will begin the transition to a new Aeronautical Data Processing System (ADPS). This will result in temporarily reduced capacity to process aeronautical data submissions, with the most significant constraints during the April 15, 2027, and June 10, 2027 AIRAC cycles.

Capacity will gradually increase cycle by cycle until normal operations resume by fall 2027, with full capacity expected for the March 16, 2028 AIRAC cycle.

Submission deadlines

To ensure changes can be accommodated during these AIRAC cycles, aeronautical data submissions must be received by their respective deadlines. Please review the submission deadline calendar for these cycles at:  https://www.navcanada.ca/en/aeronautical-information/data-submission.aspx#airac-deadlines

The calendar provides the most current deadlines for both complex changes (such as new or modified instrument flight procedures, airspace redesigns or project requiring discovery discussions) and minor changes (such as routine aerodrome information updates). We recommend checking the calendar regularly as it reflects the latest information.

Contact the NAV CANADA team at service@navcanada.caOpen a new window if you’re uncertain about your submission classification.

If you're planning aeronautical data submissions for 2027:

1. Review your project timelines immediately and adjust submission plans accordingly.
2. Consult with the NAV CANADA teamOpen a new window as soon as possible, if you anticipate submitting complex or time-sensitive changes for 2027 cycles.
3. Build additional lead time into your internal approval processes to meet the earlier deadlines.
4. Consider alternative AIRAC cycles if your changes are not time critical.

Prioritization and processing during the transition

During the transition period (September 2026 through summer 2027):

• Regulatory and safety-critical updates will be prioritized.
• Non-essential changes may be deferred to later AIRAC cycles.
• Submissions received after the deadlines for the April 15 and June 10, 2027 AIRAC cycles will not be processed, and must be deferred to a later cycle.
• Processing capacity will gradually increase cycle by cycle, with full capacity expected for the March 16, 2028 AIRAC cycle.

What will not change

The format, content and scheduled release of all cyclic 56-day publications – including AIRAC, Canada Flight Supplement (CFS), Canada Air Pilot (CAP) and Enroute charts – will remain unchanged throughout this transition.

Why we're making this change

This modernization is necessary to support evolving regulatory requirements and international data exchange standards. During training, commissioning, and parallel operations, NAV CANADA will operate both legacy and new systems simultaneously to ensure service continuity.

Questions or concerns

For all questions regarding aeronautical publications and the AIRAC deadlines, contact aisdata@navcanada.caOpen a new window. For all other inquiries, contact service@navcanada.caOpen a new window.

We appreciate your understanding and cooperation as we modernize our systems to better serve the aviation community.