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: Phonetic Alphabet and Time Zones In 1914 the U.S. Army adopted a phonetic alphabet but Spanish pronunciations created problem In 1927 a worldwide agreement of words and spelling was reached but some words were uncommon. In 1952 an International Civil Aviation Organization (ICAO) alphabet was made using Able, Baker, Charlie, Dog but it too had problems. The current alphabet was adopted in 1956. Related to this 1996 version are the names of the time zones around the globe. Alpha time zone begins 7.5 degrees west of Greenwich, England and extends to 22.5 longitude westward. Each successive 15-degrees of longitude is given a alphabetic name. Eastern time is named Echo and Pacific time s Hotel. Even during daylight savings time the names remain the same. All aviation time is referenced to Zulu. Zulu time is relative to the sun, the exact same moment all over the world is recorded by clock time in Greenwich. Why Greenwich? In 1735 John Harrison, a carpenter designed an accurate chronometer. By knowing just when noon occurred in Greenwich with the chronometer, a navigator could use an astronomical table to determine his longitude. Last Modified January 29, ©2026 TAGE.COM Related Links Featured Articles Spiral Descents Getting the ATIS Repairs Are You FARs Ready? 1996 For 100,000 Hours of Flying Traffic Patterns FAR 91 aircraft equipment required Day Self-Doubt is Normal Private Pilot Endorsements 1999 Was A Very Good Year My First Month As A Student Pilot 1998 Nall Report Mountain Accidents Buchannan Field (at Concord, California) Safe Operation More Flight Training Articles... Student Kudos "This is a neat site. I am sure you will assist me in passing my written test. (I need all the help I can). I will pass this site on to other would be pilots. I can't wait until I get my license and do some flying. God Bless and keep up the good work.. Bob" - Robert Carlson