The FAA Authorization Act of 1994 requires commercial service airports to annually file financial reports with the FAA. To meet this requirement, we created the Compliance Activity Tracking System (CATS) to gather and disseminate Congressionally mandated airport financial information. Airport personnel use it to file and amend annual financial reports. FAA staff use it to administer the Airport Financial Reporting Program. The public can use it to view the financial reports of some 520 commercial service airports.