We can always use some practice! So for this weeks video, bust out those e6b’s and let’s put them to good use. Check out the video below for full instructions! This is going to be a blast! – Jason

You're flying a course of 050 with a true airspeed of 90kts. The winds are from 070 at 15kts. What is your heading? Groundspeed? and Wind Correction Angle?

If you flew 24nm in 9 minutes how fast were you traveling (in knots)

If an aircraft burns 17 gallons in 2hrs 35mins how much fuel are you burning per hour?

Explanation Video


Well how did you do? What did you think? Leave me a comment below and tell me about it!

Text Transcript

Hey everyone! Jason Schappert back with you for, now, Part 2 of the E6B Practice questions.

Anyways, let’s dive right into it here. First question up was You’re flying a course of 050 with a true airspeed of 90kts. The winds are from 070 at 15kts. What is your heading? Groundspeed? and Wind Correction Angle? Well, on this one, this is definitely the harder of the three. By the way, if you guys haven’t watched Part 1 of the video, you need to go back and watch so all of this would make sense.

Anyways, first things first. Guys, all you have to do is follow all these instructions right here. They’re all lying out for you. So the first thing there says, place wind direction on true index. Well, this right here is your true index. Wind direction was at 070. There, 070.

The next step — again following the instructions — says to mark our wind velocity up from the center. I like to do it this way. I like to move it down to the 100. That way, when I’m counting up it’s way easier. So 070, we got that set that in there and the velocity is at 15. So mark it up from the center hole.

Now, first things first, always use a dry-erase marker because I’ve ruined plenty of these E6B’s before. So we’re at 15, there’s 10, so there’s 15. You can see how I make the prettiest dot there. You just see how I did that, that’s why I like to put it on the 100 so I can count it off a little bit easier.

Okay? So next thing we need to place our course under the true index. The course we are flying was 050. Okay, so put 050 in there. Next step is to slide the wind velocity mark — this mark we just made — to our true airspeed line. Well, we had a true airspeed of 90 knots so we place this dot on the 90. Slide it down, bam! There is the 90.

Problem here is that this dot is too big, it’s gonna be hard to be precise but we’ll get in the ball part here. Okay? So, we got that figured out. Now it says we can now read our ground speed under center. Well, this goes in two’s… 2, 4, right about 6. We’re looking at about 76 knots, or 75.. it’s somewhere in that ball part as far as our ground speed goes.

I’m gonna bring it up to the camera so you could see it better. There we go.

The next thing we need to figure out is our heading. Well, our heading is over this direction about 1,2, 3 degrees. So our heading would be 053, making our wind correction angle 3 degrees because it’s 3 degrees off. Did that all make sense?

All you have to do is follow those instructions, it explains everything else for you.

For our next two questions, we’re gonna switch over to the calculator side. In fact, you can even lose the slide rule portion. That’s what we’re gonna do, we’re just gonna have this right here. I’ll bring it up so you can see everything here.
Okay, so if you flew for 24 nautical miles and it took you 9 minutes, how fast were you traveling? Well, this E6B is full of instructions. Look right over here. We got our speed, shown by distance, minutes, hours and that’s showing the levels they’re on. A scale, B scale and C scale on the inside.

The distance is on the outer A scale and it was 24 nautical miles so let’s find that. There’s our 24 right there so we got that. And we did it in 9 minutes. Well, distance on the outside, minutes is on the inner scale. So take that 24 and I’m gonna put 9 underneath. Well, we can’t put just 9 under it, you gotta put the 9D. The thing with the E6B is that you got outside the box. This can be 9, this can be 0.9, it could be 9D, it could be 900. You gotta think outside the box with the E6B.
So, you put the distance on the outer scale, the time — the minutes, on this B scale here, the middle scale. That’s the ones you primarily deal with. Now, we’re actually going to put speed under the true index. So we look where the true index line is up. It lines up on the 16.. now, we certainly weren’t going 16 knots or 1.6 knots. We had to be going a 160 knots.

See what I mean when I say you have to really think outside of the box? That’s what I’m talking about there. Okay, so we got that one solved. Last one now. If an aircraft burns 17 gallons in 2 hours, 35 minutes, how much fuel are you burning per hour?

Yet again, the E6B comes to the rescue with a great formula. Gallons per hour is under the true index, fuel burned on the outer scale, minutes and hours on the inside. So we know we burned 17 gallons. Fuel burned on the outer scale, so we’re gonna go to the 17 right here. And we did it in 2 hours, 35 minutes. We’re gonna put the time underneath it, which actually puts us around the 15. If you didn’t know that, you can always look here, it says 2:30. So, we’ll go… it was 17 gallons, 2:35… so pretty close, right in there. So we’re gonna go ahead and read gallons per hour underneath this true index here and it’s showing about 6 and a half, maybe a little bit higher. I did the technical calculation, came up with a 6.58. You can’t get too nitty gritty on the manual flight calculator but it can come certainly close.

I’ll keep this brief. I hope you guys enjoyed it, hopefully you’ve learned something going into practice questions. If you have any questions, shoot me an email at Jason at M0A dot com and most importantly, remember, a good pilot is always learning. Catch you guys later.

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