Notice: CATS System Upgrade In‑Progress

The Certification Activity Tracking System (CATS) is currently undergoing a scheduled system upgrade.

• Upgrade Window: September 23, 2026 – September 30, 2026
• Currently approved Airport and Regional CATS users have been emailed with instructions regarding accessing CATS after the upgrade.

For urgent compliance inquiries during this maintenance period, please contact the Airports Compliance Division (ACO) at financialcompliance@faa.gov.

Thank you for your patience and cooperation as we continue to improve the CATS website.

Airports Compliance Division (ACO)