1. E6B Flight Computer is a kind of circular calculator used in the aviation industry, one of the few analog calculators commonly used in the 21st century
2. These flight computers are used during flight planning (on ground before takeoff) to help calculate fuel burn, wind correction, flight time and other items
4. Manual E6B continues to be popular in some users and some environments than electronics. The reason is that the Manual E6B is lightweight, small, unbreakable, easy to use with one hand, quick to use, and doesn't require electricity
3. In the air, you can use the flight computer to calculate ground speed, estimated fuel consumption, and updated estimated arrival time. The back is designed to determine the wind vector solution - how much wind affects speed and course. They are often called the nickname "with wheel"
5. Digital E6B is fast to learn at first, but many aviation schools still require students to learn on mechanical E6B, and in pilot writing tests and checkrides, it is recommended that pilots have mechanical E6B for the calculations they need