E6b Flight Computer Exercises Verified Info

The E6B (both the circular slide rule side and the wind side) is prone to user error. Misreading the scale by a factor of 10 or forgetting to align the “grommet” (center dot) with the wind direction leads to disastrous flight plans.

"Verified" means:

Never practice with random online problems that lack answer keys. You will inadvertently train bad habits.

Why practice these specific exercises? Because in the air, you cannot trust your gut.

If you are in the cockpit and your GPS fails, and you calculate a Ground Speed of 150 knots when your GPS was just showing 110 knots, you must know instantly if your math is wrong. By practicing "verified" exercises with known answers, you build a library of mental benchmarks. You develop a "reality check" that tells you:

Mastering the E6B flight computer (often called the "whiz wheel") is a rite of passage for every student pilot. While digital apps are convenient, the manual E6B remains a critical, fail-safe tool approved for FAA written exams. Proficiency requires consistent practice with verified exercises to ensure your calculations for ground speed, fuel burn, and wind correction are pinpoint accurate. Core Calculations: The Calculator Side

The front of the E6B operates on a 60:1 ratio, leveraging the fact that there are 60 minutes in an hour.

Time, Speed, and Distance (TSD): The most frequent problems you will solve.

Exercise: At a ground speed of 110 knots, how long will it take to travel 18 NM?

Solution: Set the "60" index (the large black triangle) under 11 (representing 110 knots) on the outer scale. Find 18 on the outer scale; directly beneath it on the inner scale is 9.8 minutes. Fuel Consumption: This follows the same ratio as TSD.

Exercise: Your aircraft burns 8.4 gallons per hour (GPH). How much fuel is used in 45 minutes?

Solution: Align the "60" index under 8.4 on the outer scale. Find 45 on the inner scale; the outer scale will show 6.3 gallons.

Conversions: The E6B easily converts between nautical miles (NM), statute miles (SM), and kilometres (KM) using specific index marks. Mastering the Wind Side

The back of the E6B is used for wind vector solutions—determining how wind affects your speed and course.

The E6B flight computer (or "Whiz Wheel") remains a foundational tool for pilots, functioning as a circular slide rule to solve complex navigation problems. It is still FAA-approved for written exams in both its traditional mechanical and modern electronic forms.

Below are verified exercise examples and a breakdown of how to use the device to solve them. 1. Time, Speed, and Distance (The Front Side) e6b flight computer exercises verified

The front side operates on a 60-to-1 ratio, aligning with the 60 minutes in an hour. The "60" index (often a large triangle) is your primary reference point.

Example Exercise: Calculate groundspeed if you fly 13 NM in 6.8 minutes.

Step: Align the distance (13) on the outer scale with the time (6.8) on the inner scale.

Result: Look at the "60" index (the rate pointer) on the inner scale. It will point to roughly 11.5 on the outer scale, which translates to 115 knots. 2. Wind Correction and Groundspeed (The Back Side)

The back side uses a sliding card and a rotating azimuth to solve wind vector problems.

Example Exercise: Find your Wind Correction Angle (WCA) and Groundspeed (GS).

Given: Magnetic Course 328°, Wind 270° at 5 knots, True Airspeed (TAS) 112 knots.

Set Wind: Rotate the azimuth to the wind direction (270°). Use a pencil to mark the wind speed (5 units) up from the center grommet. Align Course: Rotate the azimuth to your course (328°).

Adjust TAS: Slide the card so the wind dot rests on your TAS line (112 knots).

Read Result: The grommet now shows your Groundspeed, and the dot's horizontal offset indicates your WCA in degrees. 3. Density Altitude Calculation

Density altitude is critical for determining aircraft performance in different atmospheric conditions.

E6B flight computer (or "Whiz Wheel") is a circular slide rule used for essential navigation and performance calculations. Mastery involves using the Calculator Side for time/speed/distance and the for heading and groundspeed. Core Calculations & Verified Exercises

To practice effectively, use these common scenarios derived from FAA knowledge test standards. 1. Time, Speed, and Distance (Calculator Side) The outer scale represents (or Fuel), and the inner scale represents

Find the time en route for a 45 nautical mile leg at a groundspeed of 112 knots.

Rotate the inner disk to align the "60" rate arrow (Speed Index) with (representing 112) on the outer scale. (representing 45) on the outer scale. Read the time on the inner scale directly below 4.5. Verified Answer: ~24 minutes. Flight Training Central 2. Fuel Endurance (Calculator Side) Calculate the endurance of an aircraft with 53 gallons of fuel and a burn rate of 9.8 gallons per hour Set the rate arrow (60) to on the outer scale. (53 gallons) on the outer scale. Read the time on the inner scale. Verified Answer: ~5 hours and 24 minutes. Flight Training Central 3. Wind Correction & Groundspeed (Wind Side) The E6B (both the circular slide rule side

This requires using the sliding card and the "Wind Dot" method. 250° at 15 knots , True Course is , and TAS is . Find the Groundspeed.

under the "True Index." Mark the wind speed (15 knots) up from the center grommet. Rotate the disk to put (True Course) under the index. Slide the card until the wind mark rests on the speed line. Groundspeed under the center grommet. Verified Answer: ~117 knots. Flight Training Central Practice Resources

For verified practice, these tools provide automated checking:

The most basic function of the E6B is the slide rule face used for multiplication and division. Let’s verify a standard ground speed problem.

The Scenario: You are flying a leg of 90 nautical miles. You estimate this leg will take 40 minutes. What is your Ground Speed (GS)?

The Manual Steps:

The Verified Solution:

Troubleshooting: If you got 81 knots, you likely misread the numbers (reading 36 instead of 135) or placed the inner number under the wrong outer number. Remember, the numbers on the outer scale usually represent the "answer" (Distance or Speed), while the inner scale represents the "variable" (Time).

The E6B is two tools in one: a calculator (slide rule face) and a vector plotter (wind side). Most errors occur not because the math is hard, but because the setup is wrong.

Use this guide to perform the exercise, then use the "Verification Step" to confirm your answer is correct.

| Calculation | E6B Action | |-------------|-------------| | TAS | Align OAT with pressure altitude; read TAS opposite CAS | | Density Altitude | Align OAT with pressure altitude; read DA | | GS / WCA | Wind side – set wind dir & speed, rotate to TC, slide TAS to grommet | | Time to distance | Speed over 60; distance opposite time | | Fuel required | Fuel flow over 60; time opposite fuel |

These exercises match real FAA knowledge test questions and practical pilot operations. All answers have been verified using a mechanical E6B (ASA or Jeppesen) and cross-checked with an electronic E6B app (e.g., Sporty’s E6B).

A pilot is flying a Cessna 172 with a True Airspeed (TAS) of knots. They are heading into a -knot headwind.

Step: Using the "Wind" side of the E6B, the pilot marks the wind direction and speed. Action: Subtract the -knot headwind from the -knot TAS. Result: The Ground Speed (GS) is 2. Estimate Time En Route

The distance from the departure airport to the first waypoint is nautical miles (NM). Never practice with random online problems that lack

Step: Rotate the circular scale (the "Calculator" side) so the "60" rate arrow (representing minutes) points to the GS of Action: Look for

on the outer (miles) scale and read the corresponding value on the inner (minutes) scale. Result: The time to the waypoint is 3. Determine Fuel Burn The aircraft burns

gallons per hour (GPH). The pilot needs to know how much fuel will be consumed during that -minute leg. Step: Set the rate arrow to on the outer scale. Action: Locate minutes on the inner scale and read the outer scale. Result: The fuel used is 4. Correct for Wind Drift The pilot wants to maintain a True Course (TC) of 090∘090 raised to the composed with power , but there is a crosswind from 045∘045 raised to the composed with power

Step: Use the wind slide to calculate the Wind Correction Angle (WCA).

Action: Align the TC and apply the wind vector to find how many degrees left or right to steer. Result: The pilot determines a WCA of +5∘positive 5 raised to the composed with power , resulting in a True Heading (TH) of 095∘095 raised to the composed with power to stay on course. Final Verification

By running these exercises, the pilot ensures their manual calculations match their digital flight plan, a critical skill for the FAA Private Pilot Knowledge Test.

Mastering the E6B "Whiz Wheel" is all about getting "reps" in for the three main types of problems: Calculator Side (Speed/Time/Distance), Wind Side (Heading/Groundspeed), and Conversions/Altitudes.

Below are verified practice exercises and resources to help you sharpen your skills. 🧭 Wind Side Exercises (Heading & Groundspeed)

These problems are essential for flight planning and the FAA Knowledge Test. Use the "Wind Side" of your E6B to solve for Groundspeed (GS) and Wind Correction Angle (WCA). True Course Wind (Dir @ Speed) True Airspeed (TAS) Solution (GS / WCA) 240° @ 20 kts 94 kts / -10° 240° @ 30 kts 120 kts 060° @ 30 kts 140 kts / 0° (Direct Tail) 210° @ 15 kts Verify on Flight Apprentice 🔢 Calculator Side Exercises (Time & Fuel)

The calculator side uses a "60 to 1" ratio (60 minutes in an hour) to solve rate problems.

Time En Route: If your Groundspeed is 150 kts and the distance is 245 NM, set the "Rate Arrow" (60) to 150. Look at 24.5 on the outer scale. Verified Result: 1 hour and 38 minutes.

Fuel Endurance: Your plane burns 6.2 gal/hr and has 38 gallons usable. Set the Rate Arrow to 6.2. Look at 38 on the outer scale. Verified Result: 6 hours and 8 minutes.

Density Altitude: Given Pressure Altitude 3,000' and OAT 10°C. Verified Result: 3,100'. 🛠️ Step-by-Step Training Resources

If you need to verify your physical movements on the wheel, these interactive tools provide real-time feedback:

The Ultimate E6B Quiz - Calculating Time, Speed, and Distance