Best E6B Flight Computers & Plotters for the CFI/CFII Checkride (2026)

Why CFIs Need the Right E6B Flight Computer

You have already passed your private, instrument, and commercial checkrides. You know how to use an E6B. But the CFI checkride changes the game entirely — you are no longer being tested on whether you can compute wind correction angles and fuel burns. You are being tested on whether you can teach someone else to do it from scratch.

The CFI practical exam (FAA-S-ACS-25) is widely regarded as the hardest checkride the FAA offers. The Designated Pilot Examiner is not evaluating your piloting skills — they are evaluating your instructional ability. Every tool you bring into that checkride room becomes a teaching prop. Your E6B flight computer is not just a computation device; it is a visual aid you will use to demonstrate fundamental aviation concepts to an imaginary student pilot sitting across the table.

This distinction matters for tool selection. A student pilot buying their first E6B just needs one that works. A CFI candidate needs tools that are effective for teaching — clearly labeled, visually distinct, durable enough for years of student handling, and representative of what students will actually encounter in flight schools.

Here is what most CFI candidates get wrong: they walk into the checkride with whatever E6B they have been using since private pilot training — often a beat-up cardboard model or a phone app. The DPE asks them to "teach me how to find groundspeed and wind correction angle using the E6B," and suddenly they realize that using an E6B and teaching an E6B are completely different skills.

What DPEs Expect on the CFI Checkride

The CFI ACS covers flight planning and navigation across multiple areas of operation. During the oral portion, expect the DPE to hand you a cross-country scenario and ask you to:

Demonstrate and explain (as if teaching a student):

• Wind correction angle (WCA) and groundspeed using the wind side of the E6B
• Time, speed, and distance calculations on the slide rule side
• Fuel consumption and endurance for a given flight profile
• Density altitude computation using pressure altitude and temperature
• True airspeed (TAS) from calibrated airspeed (CAS), altitude, and temperature
• Crosswind and headwind components using the wind component chart

The teaching standard is specific: The DPE is roleplaying as a student pilot. You need to explain why each step works, not just how to move the dials. Saying "align the wind direction under the true index" is not enough — you need to explain what "true index" means, why we use true north for wind, and how the grid lines represent groundspeed components.

Common DPE follow-up questions:

• "Why do we need to correct for wind? Walk me through what happens to an aircraft in a crosswind."
• "My student computed a 15-knot headwind but the E6B shows 12. What did they do wrong?"
• "How would you explain density altitude to a student who has never heard the term?"
• "Show me how you would use the plotter to measure true course, then apply magnetic variation."

The DPE is looking for three things: accuracy (you get the right answer), clarity (a student would understand your explanation), and error correction (you can diagnose common student mistakes on the E6B).

Manual vs Electronic: Which E6B for Teaching?

This is not an either/or question. For the CFI checkride and your teaching career, you need both — but for different reasons.

The Manual E6B (Whiz Wheel) — Your Primary Teaching Tool

The manual E6B is the foundation of flight planning instruction. Every student pilot in the United States learns to use one. Private pilot knowledge tests include E6B-style problems. The FAA Pilot's Handbook of Aeronautical Knowledge (PHAK) dedicates an entire chapter to manual flight computer use.

Why you must master the manual E6B as a CFI:

• Student pilots are required to demonstrate manual flight planning proficiency
• FAA knowledge tests include questions designed for manual E6B computation
• You cannot teach what you do not deeply understand
• DPEs will almost certainly ask you to demonstrate on a manual E6B
• When a student's E6B gives a wrong answer in a lesson, you need to instantly see where they went wrong

The manual E6B teaches concepts. When a student turns the wind side and sees the wind correction angle appear on the grid, they build an intuitive understanding of how wind affects ground track. An electronic unit just spits out a number — useful, but it does not build understanding.

The Electronic E6B — Your Verification and Efficiency Tool

Once your students understand the manual E6B, introducing the electronic version lets them work faster during actual flight planning. As a CFI, the electronic E6B serves two roles:

1. Quick verification — When a student computes a value on their manual E6B, you can instantly check it on the electronic unit without doing the manual calculation yourself. This keeps lessons moving.
2. Teaching cross-checking — You can demonstrate the professional habit of verifying manual calculations electronically, which is how real-world flight planning works.

For the CFI checkride specifically, bring both. Use the manual E6B for your teaching demonstrations. Have the electronic unit available to show the DPE that you understand the full spectrum of flight planning tools and can teach students to transition between them.

Our Top 5 E6B Flight Computers & Plotters for CFIs

1. ASA Metal E6B — Best for Teaching

The ASA Metal E6B is the most widely used manual flight computer in American flight schools. When your future students walk into their first ground school lesson, this is almost certainly the E6B they will be holding. Using the same model they use eliminates the "my E6B looks different from yours" problem that derails lessons.

Why CFIs choose the ASA Metal:

The aluminum construction survives years of student handling. Cardboard and plastic E6Bs wear out quickly — the slide rule markings fade, the wind side becomes hard to read, and the center grommet loosens. A metal E6B maintains crisp markings and smooth rotation through hundreds of lessons.

The wind component grid on the back is a teaching goldmine. Instead of having students flip the E6B over to use a separate crosswind chart, you can show them the integrated grid right on the unit. This keeps the lesson flowing and helps students connect crosswind components to the wind correction work they just did on the front.

Key features for CFI use:

• Heavy-duty aluminum withstands daily instructional use
• Standard layout matches flight school curriculum materials
• Wind component grid doubles as a crosswind teaching tool
• Clear, high-contrast markings visible in cockpit lighting
• Slide rule side covers all standard computation needs: TSD, fuel, altitude conversions

Teaching tip: During your checkride, use the weight of the metal E6B to your advantage. Hold it up so the DPE (playing the student) can see both sides. Point to specific scales as you explain them. The metal construction makes it easy to handle with one hand while gesturing with the other — something flimsy cardboard units do not allow.

Pros:

• Industry standard — matches what 90%+ of students use
• Durable aluminum construction lasts for years
• Integrated wind component grid
• Clear markings visible in various lighting conditions
• Widely available at every aviation supply store

Cons:

• No color coding — all markings are the same color, which can confuse beginning students
• Slightly heavier than plastic alternatives
• Wind side grid is small — may need reading glasses in dim cockpits

2. ASA Color E6B — Best Visual Teaching Aid

The ASA Color E6B is identical in function to the standard metal model but adds color-coded scales that make teaching dramatically easier. Different calculation types are printed in different colors, so students can instantly see which scale to use without decoding tiny labels.

Why this is a CFI's secret weapon:

The single biggest struggle student pilots have with the E6B is finding the right scale. The standard metal E6B has dozens of scales and markings all in the same black print. Students stare at it and freeze. The Color E6B solves this by using distinct colors for time/speed/distance, fuel calculations, altitude corrections, and temperature conversions.

How CFIs use it in practice:

Many experienced CFIs carry both the standard metal E6B and the Color E6B. During initial E6B instruction, they start with the Color version — "See the blue scale? That is where we read groundspeed. The red scale is for fuel burn." Once students understand which scales do what, the CFI transitions them to the standard metal E6B that they will use on checkrides and in their careers.

Key features for CFI use:

• Color-coded scales eliminate the "which scale do I read?" confusion
• Identical layout and accuracy to the standard ASA Metal E6B
• Excellent for visual learners (most students)
• Creates a natural teaching progression: Color E6B → Metal E6B
• Aluminum construction matches the durability of the standard model

Teaching tip for the checkride: If you bring this to your CFI checkride, explain to the DPE why you chose it as a teaching tool. Say something like: "I use the color-coded version for initial E6B instruction because it helps students identify scales visually, then transition them to the standard metal model once they understand the layout." This demonstrates instructional awareness — exactly what the DPE wants to see.

Pros:

• Color coding dramatically speeds up student learning
• Identical calculations to the standard metal E6B
• Same durable aluminum construction
• Excellent conversation piece for demonstrating teaching methodology
• Slightly less expensive than the standard metal model

Cons:

• Students must eventually transition to the standard (non-color) E6B
• Colors may be harder to distinguish in very dim lighting
• Less common in flight schools — students may not recognize it initially

3. ASA CX-3 Pathfinder — Best Electronic Flight Computer

The ASA CX-3 is the most popular electronic flight computer in general aviation and the only electronic unit most CFIs need. It is FAA-approved for all pilot knowledge exams (private through ATP), features a color LCD display with intuitive menus, and performs every calculation a manual E6B can do — plus several it cannot.

Why CFIs need an electronic E6B:

Speed. When you are teaching a ground lesson and a student asks "what if the wind was from 270 at 20 instead of 15?", you do not want to recalculate the entire wind problem on the manual E6B. Punch the new values into the CX-3 and have the answer in three seconds. This keeps lessons dynamic and lets you explore "what if" scenarios that build deeper understanding.

The CX-3 as a teaching progression tool:

The recommended instructional sequence is: (1) teach concepts with the manual E6B, (2) verify answers with the CX-3, (3) eventually show students how to use the CX-3 for efficient real-world planning. This mirrors how professional pilots actually work — they understand the fundamentals but use electronic tools for efficiency.

Key features for CFI use:

• Color LCD display with clearly labeled menus
• Flight planning: wind, heading, groundspeed, time en route, fuel
• Weight and balance calculations
• Density altitude, pressure altitude, true airspeed
• Timer and clock functions
• FAA-approved for all written knowledge exams
• Runs on two AA batteries (easy replacement)

Key features for CFII use:

• Holding pattern wind correction calculations
• IFR fuel planning with reserve computations
• ETA calculations for instrument approaches
• Leg time computations for multi-segment IFR routes

Pros:

• Instant calculations — perfect for "what if" teaching scenarios
• FAA approved for all knowledge exams
• Color display is easy to read in all lighting
• Comprehensive flight planning functions beyond what a manual E6B offers
• Battery life lasts months with normal use

Cons:

• $131 — significantly more expensive than manual E6Bs
• Cannot replace manual E6B proficiency for CFI checkride
• Students may become dependent on it if introduced too early
• Electronic devices can fail — never rely on it as your only flight computer

4. ASA Ultimate Rotating Plotter — Best Plotter for CFIs

A plotter is just as essential as the E6B for the CFI checkride. You need to demonstrate how to measure true course on a sectional chart, apply magnetic variation, and determine distance between waypoints. The ASA Ultimate Rotating Plotter is the best option for teaching because its rotating azimuth gives direct course readout without the repositioning that fixed plotters require.

Why rotating beats fixed for teaching:

With a fixed plotter, measuring true course requires two steps: (1) align the plotter's straight edge along the course line, (2) read the angle where it crosses a meridian line. Students constantly misread the angle because they choose the wrong side of the protractor or misidentify which meridian they crossed.

The rotating plotter eliminates this confusion. You align the straight edge along the course, rotate the azimuth to align with the nearest meridian, and read the true course directly from the index. One step, one reading, fewer student errors. As a CFI, fewer student errors means more productive lessons.

Key features for CFI use:

• Rotating azimuth provides direct true course readout
• 13.25-inch length spans most sectional chart courses easily
• Both sectional and WAC scales for distance measurement
• Nautical and statute mile markings
• Clear, high-contrast printing for cockpit use
• Durable construction withstands student use

Teaching tip: When demonstrating plotter use on the checkride, talk through your alignment process step by step. "First I place the straight edge through both waypoints. Then I rotate the azimuth until the north arrow aligns with a meridian. Now I read true course directly — 247 degrees. This method gives us true course in one step, which reduces student errors compared to a fixed plotter."

Pros:

• Rotating azimuth is faster and less error-prone than fixed plotters
• Long enough for most chart measurements
• Both sectional and WAC distance scales
• Affordable at under $20
• Made in USA

Cons:

• Larger than some compact plotters — takes more flight bag space
• Rotating mechanism can loosen over time with heavy use
• Some DPEs may also want you to demonstrate a fixed plotter method

5. CYA E6B Metal — Budget Alternative

The CYA E6B is a well-built aluminum flight computer that costs slightly less than the ASA Metal E6B. It features a patented USA design with particularly smooth-rotating parts and includes both nautical and statute mile scales. For CFIs on a budget or those who want a backup E6B, the CYA offers excellent value.

Where the CYA shines:

The rotating mechanism on the CYA is notably smooth — the wind side dial and slide rule glide without the sticking or grittiness that cheaper flight computers sometimes exhibit. When you are demonstrating E6B use during a lesson and rotating the dial back and forth to show wind correction concepts, smooth operation matters.

CFI consideration — brand familiarity:

The one trade-off with the CYA is that most flight schools use ASA products. Your students will likely have ASA E6Bs, and while the calculations are identical, the physical layout differs slightly. If brand matching is important to your teaching style, stick with ASA. If you just need a high-quality backup or your school happens to use CYA products, this is an excellent choice.

Key features:

• Aviation-grade aluminum construction
• Smooth rotating parts (notably better than some competitors)
• Both nautical and statute mile scales
• Wind side with crosswind correction grid
• Standard slide rule calculations: TSD, fuel, altitude

Pros:

• Slightly less expensive than ASA Metal E6B
• Exceptionally smooth rotating mechanism
• Solid aluminum build quality
• Includes both nautical and statute scales
• Good option as a backup E6B

Cons:

• Less common in flight schools than ASA — students may have a different layout
• Fewer online tutorials reference this specific model
• Scale label placement differs slightly from ASA, which can cause confusion when teaching ASA-equipped students

Building Your CFI Flight Bag

Here is the recommended toolkit for the CFI checkride and your teaching career, organized by priority:

Essential (Bring to the Checkride)

Checkride cost: ~$65-75 for the E6B and plotter (charts and supplements are separate).

Recommended (Adds Teaching Versatility)

The Complete CFI Flight Planning Kit

For around $200 total, you get a professional-grade teaching toolkit:

• ASA Metal E6B (primary) — $44.28
• ASA Color E6B (teaching) — $41.98
• ASA CX-3 (electronic) — $131.00
• ASA Ultimate Rotating Plotter — $18.31

This kit covers every teaching scenario from day-one ground school through instrument instruction and lasts for years of daily use.

CFII-Specific Additions

The CFII (Certified Flight Instructor — Instrument) checkride builds on everything from the CFI checkride and adds instrument flying instruction. Here is what changes for your flight computer toolkit:

Additional E6B Skills the CFII DPE Expects

Holding pattern entry determination: While not strictly an E6B calculation, you must teach students how to determine direct, teardrop, and parallel entries based on the holding fix bearing and aircraft heading. The wind side of the E6B can help visualize wind correction during holding — teach students to compute a wind correction angle for the inbound leg and apply it.

IFR fuel planning with reserves: Instrument flight plans require more precise fuel calculations because you must account for:

• Fuel to the destination at planned altitude
• Fuel for the approach (typically 10-15 minutes)
• Fuel to the alternate (if required under 14 CFR 91.169)
• 45-minute IFR fuel reserve
• Taxi fuel

The manual E6B handles each leg's fuel computation. The CX-3 can compute total fuel required across all legs more efficiently — demonstrate both methods to show students the cross-checking process.

True airspeed at altitude: IFR flight planning requires accurate TAS computations at cruise altitude. The E6B's TAS window (align pressure altitude with OAT) is the standard method. Teach students to compute TAS for multiple altitudes to help them choose the optimal cruise altitude for the planned route.

ETA calculations for approaches: When teaching instrument approaches, students must compute estimated time to the missed approach point (MAP) based on groundspeed. The E6B's time-speed-distance scale handles this directly. Teach students to pre-compute MAP timing for several likely groundspeeds so they have the value ready before beginning the approach.

CFII Checkride Tip

Bring your IFR low-altitude en route charts and approach plates to the CFII checkride along with your E6B toolkit. The DPE will likely give you an IFR cross-country scenario and ask you to teach the complete planning process — routing, altitudes, fuel, alternates, and approach briefing. Having your flight computer tools organized and ready to use demonstrates the professional habits you will instill in your instrument students.

Common E6B Teaching Mistakes to Avoid

These are the most frequent errors CFI candidates make when teaching E6B use during the checkride:

1. Going too fast. You have been using the E6B for hundreds of hours. Your "student" is seeing it for the first time. Slow down. Narrate every dial movement.

2. Skipping the "why." Do not just say "put the wind direction under the true index." Explain why the true index represents the aircraft's heading and why wind direction must be relative to true north on the E6B.

3. Holding the E6B so only you can see it. Orient the flight computer so the student (DPE) can see the scales and dial movements. This seems obvious but most people instinctively angle it toward themselves.

4. Not teaching error recognition. DPEs love to ask: "My student got 145 knots groundspeed but the answer should be 125. What did they probably do wrong?" Be ready to diagnose common student errors: reading the wrong scale, setting wind speed instead of wind direction, forgetting to account for magnetic variation before using the wind side.

5. Ignoring the wind component grid. Many CFI candidates demonstrate wind correction on the wind side but forget to show the crosswind component chart on the back. The DPE may specifically ask about crosswind limits for student solo flights — you need to teach students how to determine the crosswind component from a given wind report.

Free CFI & CFII Exam Prep Resources

The best E6B in the world will not help if you are not prepared for the full scope of the checkride. Pair your flight computer practice with solid study materials:

• Free CFI Study Guide — Complete coverage of all CFI areas of operation per FAA-S-ACS-25
• Free CFII Study Guide — Instrument instruction topics and IFR planning concepts
• AI Tutor — 10 free questions per day — ask it to roleplay as a student pilot while you practice teaching E6B concepts
• Practice Questions — Test your knowledge of flight planning, weather theory, aerodynamics, and regulations

The AI tutor is especially powerful for CFI preparation. Ask it to "Act as a student pilot who is confused about how wind correction angle works on the E6B" and practice your explanation. Or try "Quiz me on density altitude calculations that a DPE might ask during a CFI checkride." Teaching is a skill that improves with practice — even practice with an AI.

Final Verdict

For the CFI checkride and your teaching career, the ASA Metal E6B ($44.28) is the must-have tool. It is the industry standard that your students will use, it is built to last through years of instruction, and it is what DPEs expect to see. Pair it with the ASA Ultimate Rotating Plotter ($18.31) for a complete flight planning demonstration kit under $65.

If you want to elevate your teaching, add the ASA Color E6B ($41.98) for initial instruction — the color-coded scales make first lessons dramatically smoother. And once you start instructing full-time, the ASA CX-3 ($131.00) becomes invaluable for quickly verifying student work and exploring "what if" scenarios during ground lessons.

The CYA E6B ($40.99) is a solid budget alternative or backup, especially if smooth mechanical operation is your priority.

Remember: the CFI checkride tests your ability to teach, not just compute. Practice explaining every E6B calculation out loud until your narration is as smooth as the dial rotation. Walk into the checkride ready to turn a confused student pilot into an E6B-confident navigator — that is what earns the certificate.

free CFI study guideFree exam prep with practice questions & AI tutor