How To Find Calibrated Airspeed CAS - E6B

[@straightupdown6489]

5 years later, and you’re still helping create baby pilots haha I love you

[@superhexwin]

My pleasure

[@davidcloudninerorg6635]

Thanks for the video! Just a side note reminder: "Calibrated" means corrected for position and mechanical errors that are unique to each aircraft and different airspeeds, attitudes, configurations (flaps). For example, the 172s POH has an airspeed calibration chart Performance Section 5 Figure 5.1 to convert KCAS to KIAS. There is also a chart for Stall Speeds KCAS and KIAS Figure 5.3. In other words, you can derive TAS and CAS on an E6B given PA and OAT, for testing purposes, but to convert KIAS (from ASI) to KCAS to KTAS you need a POH. If your aircraft airspeed indicator DOES NOT have a TAS feature, you could use E6B and POH to calc TAS. REALITY CHECK, no one is going to do this while flying, but I am just trying to make a point of the necessary connection between E6B CAS and POH CAS-IAS. 1) Whatever altitude you are flying, get Pressure altitude by dialing 29.92 in Kollsman window. 2) Get OAT in Celsius from temp gauge. 3) Read Indicated airspeed from ASI and convert to KCAS with POH. 4) On E6B Calc Density Altitude as in the video 5) Take KIAS-KCAS conversion from POH and find it on CAS inner dial on E6B and corresponding TAS on outer dial. This is the correct way to connect KIAS (indicated airspeed from ASI) to TAS. To simplify, the E6B CAS means nothing, in the real world, without making a link to POH conversion chart, KCAS to KIAS. Sorry, got a bit nuanced!

[@superhexwin]

Thanks for the update

[@davidparker8752]

Very well put. And nice to see how the real world application would be performed.

[@StuntmanJake]

Excellent comment. Thank you.

[@00appleberry00]

My Instructor made this way more complicated than necessary!! You the best dude. Thanks!

[@marcl4034]

I came here because I have my IRA test in short order. If I get calibrated air speed questions on my test, I can now feel comfortable in answering them. Thanks!

[@MakingAPilot]

I was racking my brain on why my answers weren't coming in right on the practice tests. this demo made me see my error. You ROCK

[@DavidRodriguez-kc8kd]

Not all hero wear capes. Thank you very much

[@superhexwin]

+David Rodríguez lol thanks

[@snipinglive5798]

This whole time I was using 80 TAS as 180 instead of 18. Thank you. This video saved a lot of aggravation

[@superhexwin]

SnipingLive glad I could help.

[@maxwellmartin5452]

This 6 year old video is still the best man thanks, I’m in my instrument ground school right now

[@dopefiendlarz133]

Now I have to get stronger glasses.Thanks a lot Obama. Seriously. This is helpful to know how to work the problem on the manual but I still will use elec for accuracy but at least now I understand how the number is arrived at.

[@TheFlyingJ]

This helps tremendously! I take my IRA written in a few days and the KCAS problems were always a bit tricky for me. Thanks for the explanation man! Edit: I took the IRA Written about a week ago and got 100%! There weren't any questions regarding CAS on my specific test, but I now know a very easy way to get it from my E6B thanks to this video. Take care.

[@cessna172ident]

Thank you thank you thank you. I'm also studying for my instrument and your explanation saved me an hour of frustration.

[@superhexwin]

Brian good stuff!

[@aaronnelson4901]

A true hero, also doing instrument, because it is online this stuff is hard to understand! Thanks man!

[@superhexwin]

Thanks

[@jeffreycoll4875]

dude you just gave one more correct answer in my ifr written! great job

[@superhexwin]

Right on!

[@tiffanishiro2361]

Thanks, I read the each page of the Instrument Commercial Manual. This was never shown. I really appreciate your efforts to help us!!!!!!! On to the next question.

[@superhexwin]

+Tiffani Shiro my pleasure!

[@OpeInspires]

Thank you very much for this! Couldn’t find any video on how to calculate CAS. Appreciate!

[@NoelNakasone]

absolutely great vid. love the detail, really broke it down step by step to make it extremely understandable

[@travistorbett4639]

Working on my IFR now. Thank you, great explanation!

[@airickburn322]

also studying for instrument this helped big time. thanks for making it nice and simple

[@superhexwin]

+Airick Burn Glad to help!

[@mrpetebojangles21]

Awesome vid man! E6b stuff has always been difficult for me. Good stuff.

[@superhexwin]

Peter Anderson thanks!

[@nickb193]

Getting ready for my PPL written, helped a lot! Thank you!

[@superhexwin]

Glad I could help and congrats.

[@sayedbaha330]

Thanks Tyler, I really appreciate making it simple. I am working on instrument written test. This video helped a lot.

[@longegg7130]

Not even a CFI yet you are better than mine. When I still wouldn't understand something after my instructor would halfway explain, he would get an attitude problem and roll his eyes.

[@superhexwin]

Long Egg oh man sorry to hear about your instructor can you get a new one? I m Glad to be able to help out.

[@theeflea03]

Thanks man. This is an AWESOME in depth review! You really cleared up all the confusion. Nice Job.

[@superhexwin]

+Theeflea03 My pleasure! Glad to help!

[@theeflea03]

+Tyler Schenk Seriously though, this has got to be one of the best tutorials I've ever seen. You outta make more!

[@superhexwin]

+Theeflea03 Really appreciate the compliment. More videos coming soon.

[@aerialvideosmexicali-pacod6452]

Dude first video i find where someone explains it just enough thx bro!

[@hockeycool25]

I’ve always hated the whiz-wheel. Now thanks to you, I hate it a little less.

[@superhexwin]

Dan Halgren lol glad to help

[@drewdeboskey3175]

Thanks so much! Got my written exam tomorrow!

[@yourwisegamer3844]

Bro I ALWAYS ALWAYS forget how to do this step. And i always come here to see this same vid before every checkride to see this exact step. I did it over 6 times already throughout the course of a year haha.

[@lovingoutdoors5112]

Great video! I think you did a really good job with the camera work, you zoomed in very clearly on those tiny little windows

[@kenmichaels1842]

Very nice tutorial, thank you! Studying for Instrument written and had a hard time with this. This helps with the whiz wheel for sure!

[@superhexwin]

Ken Michaels Glad to help!

[@VIDjonathan4]

Looked this up preparing for my Private pilot oral... great quality and great info easy to follow

[@superhexwin]

Awesome glad to hear!

[@j_1mmy175]

working on my ppl now but its great to know how to fully use the e6b. Thanks !

[@andrewvela2266]

Works great. Im using the same book and same E6b from ASA and was working on the same question. Thanks for sharing

[@ashkanfered]

Truly a life saver. Bless your soul.

[@superhexwin]

Thanks!

[@stevesayer4045]

Thank you i have the same book as you and this got me i just could not get my head round it to do it, but with this video i can do it now thank you for show us how it done on this video great job and great video mate thank you

[@kenknowles4187]

Super simple, super easy. Much thanks for the video!!!

[@superhexwin]

You’re welcome Kendal!

[@ryanthan3595]

Saved my time, thank you very much! All the best, airman!

[@superhexwin]

Welcome!

[@mbryant7129]

Thank you, by far the best video on this topic!!!

[@superhexwin]

Awesome to hear!

[@elliawilson231]

Thanks this really helped me in studying for the IFR written!

[@superhexwin]

Glad it helped!

[@marius1]

Thank you for sharing, I've been searching for answers to this for almost 2 years.

[@superhexwin]

+marius1 My pleaseure

[@AAYGENTMULDER]

Hey, thanks! Very good explanation; helped me a lot in understanding how to do this on the exam (which is coming up!). Thanks!

[@superhexwin]

+AAYGENTMULDER Hey, glad to help. Appreciate it.

[@bjornmclir5015]

Great job walking through it helped me a lot thanks!

[@tarrosman]

Great explanation! The process is showing how to calculate TAS in fact. CAS is a number taken from the POH and is specific for each aircraft as CAS is manly caused by installation or positions errors of the instrument. Using the graphs or charts under the performance chapter of the POH you could find CAS. On the E6B when you use temperature and altitudes data to calculate speed is to find TAS which is affected by temperature and altitude.

[@superhexwin]

Thanks

[@diaryrecorded5524]

HEY! I CHECKED YOUR CHANNEL AND THERE NEEDS TO BE MORE STUFF LIKE THIS ON IT! THANKS FOR THE VID! also take me flying! looks like you live not far from me and im just getting into this

[@rashob9606]

Thank you very very much! You helped solve the confusion in my head!

[@emmanueldassas]

Thank you so much for that video. I was going crazy trying to find the answer. You did a great job with the video. Now I get it

[@parkerpritchard8654]

Really helped a ton! Exactly what I was looking for. Thanks a million!!!!

[@superhexwin]

Parker Pritchard Glad to help!

[@abbieamavi]

*thank you!! I have my IR checkride this Halloween, this coming Saturday.* :D

[@superhexwin]

Glad I could help and good luck on your checkride.

[@MichaelRexford1]

Dude. Thank you so much. You are a life saver. Or should we say “checkride saver”

[@superhexwin]

My pleasure

[@JohnCWildcat]

After watching this, I'm not sure why I couldn't figure it out, haha! THANK YOU!

[@HouseCiliviel]

Great video. Helped lots. Thanks.

[@superhexwin]

HouseCiliviel my pleasure 👍🏻

[@SudoGuy002]

Thank you so much. I was having trouble using the flight computer in general but now I know what to do😂❤.

[@1WhiteShadow]

Thank you, I was watching a video on cross-country flying by another (somewhat famous) channel and the dude just zoomed past this and I was all confused.

[@clydesatou]

Thanks Tyler! You're a hero!

[@superhexwin]

Glad to help

[@ppshootecopew.-]

Because I always calculate my CAS before every single flight. Comes in very handy.

[@superhexwin]

Thanks

[@jairogutierrez6609]

You saved my life, what a hero :D Thank you!

[@superhexwin]

+Jairo Gutierrez glad to hear. Thanks!

[@zee63976]

I used the window on the left side and got wrong numbers, wondering what hinted you to use the window on the right side? I mean they both have pressure alt and temp scales..

[@benstajdl3616]

Fairly easy to follow and makes sense

[@hunterfagan6272]

what is calibrated airspeed used for?

[@Taser1-1]

Thank you very much! Good explanation, simple, and straight to the point.

[@superhexwin]

Glad to help! Appreciate the compliment.

[@Taser1-1]

+Tyler Schenk did you passed your written? If so, did you only used the book?

[@superhexwin]

***** Yes, I passed my PPL written. I used the book and also did a lot of practice exams on www.exams4pilots.org

[@Taser1-1]

+Tyler Schenk congrats!

[@superhexwin]

Oh and I also bought Jason Schappert's "Pass your private pilot checkride" book - which helped me understand things more clear.

[@linotmike859]

Thanks dude really helped me out!

[@superhexwin]

Glad I could help!

[@davidsuchite9757]

This helped. I'm pretty new to this.

[@superhexwin]

Glad to help!

[@jazzleee]

Really helpful, got stuck on this. Thanks!

[@superhexwin]

Glad to help

[@ericandi]

Did you use the altimeter setting of 8k feet as your pressure altitude? Is that accurate? Don't you need to figure out your pressure altitude? Doesn't your pressure altitude vary from the indicated altitude on the altimeter?

[@MikeEmersontv]

Thank you my dude

[@blaiseconwell1833]

Very helpful. Thanks. I'm working on instrument rating also. Needed this.

[@superhexwin]

Glad I could help. Thanks!

[@superhexwin]

+Blaise Conwell Awesome! Glad to hear.

[@y_equals_mx_plus_c]

Very awesome demonstration!!!

[@arod1pilot]

Can you use an electronic e6b? With me using bifocals it's hard using this method

[@TonyWings1]

Awesome!this is the great video to learned

[@superhexwin]

Thanks.

[@sandypella]

Dude u saved my life thanks!

[@pierrevqx2060]

thanks a lot! way easier to understand than those fucking manuals!

[@superhexwin]

+pierre vuaroqueaux Awesome! Glad I'm able to help! I didn't expect this video to get so many positive reviews.

[@timothynicholson9191]

Great explanation. Thank you!

[@superhexwin]

Timothy Nicholson glad I was able to help.

[@euroworksauto]

Thank you so much man

[@uncledrew2903]

Man you are just awsome. Thank you!

[@superhexwin]

Thanks. Glad you enjoyed this video!

[@thebluegreengoose]

Look up the def on CAS. It's something ineternal to the system. It's worse at low speed, but negiglible at cruise speed. The FAA Airmans Information book says this. I believe it said CAS == TAS at cruise. Or elsewhere.

[@superhexwin]

Great info

[@edwardp.shikles7251]

This was very helpful! Thank you!

[@bennythepilot809]

Thank you sir. Very helpful.

[@c_breezy4596]

If I could like this more than once I would!

[@sirkreitz4484]

thanks ;-) super helpful, I also couldn't remember, and this video made it nice and easy. Great job overviewing. #sub.

[@alissontorres4003]

You are such a life saver!!!!

[@edwinrosales8320]

Thanks! the video helped me a lot

[@superhexwin]

Edwin Rosales Great to hear!

[@erayozdemir7940]

is this paper or plastic model ?????

[@greenrxp11]

thanks for the video

[@superhexwin]

+greenrxp11 My pleasure. Glad to help.

[@dionyziz]

Thank you this was very helpful.

[@superhexwin]

Honored to help!

[@johnmerizier1247]

THANK you so much for your help! you're amazing

[@Caleb230CH]

Are CAS and IAS basically the same at low altitudes and low airspeeds? What is the main difference between the two and then mixed in with TAS?

[@superhexwin]

At low altitudes and airspeed yes they are close to equivalent. Calibrated airspeed (CAS) is indicated airspeed corrected for instrument and installation error. Indicated airspeed (IAS) is what is read off your airspeed indicator as you fly. True airspeed (TAS) has to do with the speed at which the airplane is moving relative to the air that surrounds it. Thanks!

[@CarlosAguilar-dj4ph]

IAS is the airspeed directly displayed by your airspeed indicator which is the difference between ram air pressure and static pressure. I don't think IAS airspeed and CAS will be the same. But TAS and CAS airspeed can be equal if standard atmospheric conditions exist

[@superhexwin]

Carlos Aguilar Good stuff Carlos!

[@thekillerdude100]

Thank you. Really helpful

[@superhexwin]

+Daniel My pleasure.

[@MinecraftCosmic]

What text book are you using in this video? Thanks!

[@superhexwin]

+pantanakarn somboon Jeppesen Instrument Rating Test Guide.

[@superhexwin]

Jeppesen guided flight discovery instrument commercial.

[@adifferentchannel390]

Thank you this was very helpful 🙂

[@lionelf4781]

Very good help ! many thanks.

[@superhexwin]

Welcome

[@badgerfishinski6857]

just to clarify..... is the PA the same as the cruising altitude? At the time of flight, what if the reported METAR/ATIS Altimeter setting was 29.42 vs 30.42 ? Would the PA still be the same as the cruising altitude? In other words, if our cruising altitude was 8000 feet, while our Altimeter setting (real pressure as reported by METAR/ATIS) was 29.42, would our PA be 8500' feet? or if our altimeter setting (real pressure as reported by METAR/ATIS) was 30.42, would our PA be 7500'?

[@kemalcaki7492]

Many thanks for this very useful video.

[@superhexwin]

Kemal CAKI my pleasure!

[@christophercoward9476]

What book were you using

[@superhexwin]

+Christopher Coward Jeppesen guided flight discovery instrument commercial

[@dzdz7453]

Thank you, this was really helpful

[@superhexwin]

Glad to help

[@Kungpaopao31]

Great explanation!! Thank you!!

[@raskolnikovmihaylovic1]

adamsın kardeşim allah razı olsun

[@masonvandermerwe8141]

Gentleman and a scholar!

[@superhexwin]

Mason Van Der Merwe 👌🏻

[@Jorge-ef4du]

This is perfect. Thanks dude

[@superhexwin]

Jorge D. My pleasure

[@allennewport9479]

Thanks man

[@strumsvokals4680]

Thanks a lot!! Super helpful ❤️

[@gustan7]

Thanks man! I got stuck on the same problem haha

[@superhexwin]

+Stan Gu my pleasure