How To Find Calibrated Airspeed CAS - E6B

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#calibratedairspeed #e6b #ifr

[straightupdown]

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

I love you

[davidcloudninerorg]

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!

[DavidRodriguez-kckd]

Not all hero wear capes. Thank you very much

[appleberry]

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

[marcl]

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!

[snipinglive]

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

[maxwellmartin]

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

[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

[dopefiendlarz]

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.

[OpeInspires]

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

[airickburn]

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

[Xaunoki]

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.

[cessnaident]

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

[travistorbett]

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

[aaronnelson]

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

[tiffanishiro]

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

[nickb]

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

[jeffreycoll]

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

[NoelNakasone]

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

[sayedbaha]

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