The E6B was developed in the United States by Naval Lt. Philip Dalton in the late 1930s. The name comes from its original part number for the U.S Army Air Corps in World War II. The E6B is a circular slide rule on the front side, or ‘computer’ side, and a wind triangle calculator on the ‘wind’ side.
ASA’s manual for the E6B provides detailed instructions with pictures of each calculation that can be performed. The flight computer can be used to solve dozens of aviation math calculations. You need to be proficient with at least the calculations in the table below. You can check your answer by hovering your mouse over the question.
Watch this video first to learn about how to interpret the values on the circular slide scales.
Calculations you need to be proficient performing  Practice Problems  Resources 
Time – Rate – Distance  Use your E6B to solve these problems:

See pages 810 in ASA’s manual for the E6B 
Calculate Fuel Burn  Use your E6B to solve these problems:


Calculate a wind correction angle (WCA)  Use your E6B to solve these problems:

To account for the movement of airmasses, you need to calculate a correction to your course that will eliminate wind drift. Your flight computer has a wind side that uses a wind triangle to determine this correction. See pages 2832 in ASA’s manual for the E6B 
Calculate groundspeed 
Use your E6B to solve these problems:


Calculate Density Altitude, TAS from IAS, or IAS from TAS 
Use your E6B to solve these problems:

See pages 18 & 19 in ASA’s manual for the E6B 