Welcome to CATS F o r R e g i s t r a t i o n C a l l T o l l - F r e e 1-800-947-4228 Computer Assisted Testing Service (CATS) delivers computer-based examinations for Sponsors and Agencies involved in educational, licensing, or certification testing. CATS administers FAA and FCC exams to pilots, airplane mechanics, and radio operators at over 350 locations which include the United States, ...