Slide the inner card until your True Airspeed (TAS) line sits directly under your pencil wind dot.

do the heavy lifting today, the E6B remains a reliable backup that doesn't need batteries and is approved for FAA knowledge tests

Mastering the E6B flight computer, affectionately known as the "Whiz Wheel," is a rite of passage for any pilot. This circular slide rule has remained a cockpit staple for over 80 years because it doesn't require batteries and can solve complex navigation problems in seconds.

Align the (60 index) on the inner scale with your hourly fuel burn rate on the outer scale.

Slide the grid up or down so the center grommet sits on a clear line (e.g., 100).

In the age of glass cockpits, iPads, and ForeFlight, you might be tempted to leave that cardboard or metal E6B whiz wheel buried at the bottom of your flight bag. Don’t.

Burn rate 11.2 GPH, Time 2 hours 15 minutes. Find Fuel Used.

Slide the background grid until your wind dot is on the 112-knot arc.

Your aircraft consumes 24 gallons of aviation gasoline over a 2.5-hour (150 minutes) flight. What is your hourly fuel burn rate?

Locate the "For Airspace/Density Alt" window on the calculator side.

120 knots. Align 18 on the outer scale with 9 on the inner scale. Look at the 60 index arrow to read 120 knots. 2. Fuel Consumption and Endurance

The front of the E6B is used for calculations involving time, speed, distance, and fuel. Use the Outer Scale (Miles/Fuel) and Inner Scale (Time) to solve the following: 1. Time, Speed, and Distance Exercise A:

Slide the wind grid up or down until the pencil mark rests on your True Airspeed line (120 knots).