We Help You Pass Our free online study guide really works. You can study for your FAA private pilot ground school exam right now. For more info about the 4VFR.COM project, click here. You can find a daily update log here. Live ATC Audio Streams Tune into live air traffic control frequencies from North America. This feature requires Real player. Start listening to ATC now! Reference Library Our glossary lists and databases have grown quickly. I am working to create an on-line reference library to tie together all the loose ends. You can check out what is currently available in the library FAA Practice Exam - New! Introducing our newly enhanced practice exam. Now with figures!. Take a test a day for a week, and I guarantee you will do better on your exam. Get Started Now! Show your support for 4VFR.COM - Link us. Bookmark us. Tell your mother about us. Press CTRL-D to bookmark this site now!. Check out one of our proposed T-Shirt Designs. Feature Article: Holding Patterns IFR The shape of the holding pattern was based upon a requirement that older gyro instruments be allowed to settle down in a turn. The one minute straight legs gave the gyros the time to settle down before beginning another turn. A holding pattern of continuous turns would cause precession and unreliable indications. Last Modified December 25, ©2025 TAGE.COM Related Links Featured Articles Accidents By Experience Level Radio Q-History Controlled Airport Radio Instructional Frustration Are You Ready? Cruise Control Ground Reference What to Expect from Fatigue Sequence of Decision for Airworthiness Repairs Areas of Required Knowledge Learning To Fly Young Taxiing Runup FAR 61.35(a)(f) and 61 105(a) Aeronautical knowledge More Flight Training Articles... Student Kudos "4VFR.com rocks!! I love the fact that I can take a short practice test right at my desk while taking a 5 minute break at work! Great idea, great site...look out Gleim, 4VFR.com is going to eat your lunch!" - Matt Johnson