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: Illusions - Natural Illusions
Rain
Rain gives the illusion of being higher than you actually are.
Combined with haze, you will fly lower approaches during rain.
Visibility
Low visibility can cause the illusion that things are further
away. Entering a fog during descent will give an illusion of pitching
up.
Wind
An updraft can cause such vertical sensation as to cause the pilot
to put the nose of the aircraft down. He senses a climb where
the attitude of the aircraft has been level. Avoid the weather
conditions that can cause illusions. Believe your instruments.
Get an instrument rating.
Health
Illness, medicine, alcohol, fatigue, or hypoxia will make susceptibility
to an illusion more likely. It takes very little to cause disorientation
Last Modified February 9, ©2026 TAGE.COM
