Distance Measuring Equipment (DME) Explained - Part 1

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What is a DME (Distance Measuring Equipment) arc? How does the DME work? And most importantly, how do we use it during Flying Operations?
By the end of this KZbin Video, you will be able to answer all the questions above.
The DME procedures are, somehow, a bit more complex to grasp compared to the majority of IFR operations.
After Flying for more than 15 years and train more than 300 students, I decided to create this post in order to make this topic as understandable as possible.
DME stands for Distance Measuring Equipment.
It measures the distance between a piece of airborne equipment, normally called Airplane, and a ground station, which is the Distance Measuring Equipment itself.
The Pilot has a DME instrument that shows him/her how far is the Airplane from the station.
So, if we locate a Distance Measuring Equipment station at the Airport, the Pilot will be able to read the distance between the Aircraft and the Destination Airport.
The Distance Measuring Equipment also provides Ground Speed to the Pilot.
The integration of the Distance Measuring Equipment system happened before the GPS, so it has been for a long time, a huge step forward and relief for Aviation.
The Pilots were suddenly able to know, almost exactly, how far they were from the destination Airport.
The Distance Measuring Equipment ground station, when installed, is usually located close to the Airport.
In this KZbin video, you will also learn what the DME limitations and errors are.
This is the first video about DME, in the next, we will analyze how is it used during Flight Operations.
If you want to know more about Pilot License watch the following video:
• How To Become A Pilot ...
You can access the entire Blog Post relative to the Distance Measuring Equipment by clicking the following link:
pilotclimb.com/dme-and-dme-ar...
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Disclaimer:
THIS VIDEO IS FOR ENTERTAINMENT PURPOSES ONLY.
NOT FOR REAL-LIFE OPERATIONS.
PLEASE REFER TO THE OFFICIAL MANUAL AND DOCUMENTATION.
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[@harshitahuja1205]

Great video, Captain! Although I have cleared the Air Navigation exam, I still watch your videos because they're amazing. Thanks!

[@PILOTCLIMB]

That's awesome!! Thanks a lot !!

[@arunprasathj]

Nicely explained .. Thank you Captain !!

[@PILOTCLIMB]

Thank you very much!! Don't hesitate to ask any question you may have when watching the rest of the videos!! Have a great day Gabriele Pilotclimb

[@jluke6861]

Thank you for making this video.

[@PILOTCLIMB]

You are welcome!!

[@Robertotvl]

Thank you for the explanation, this will help me greatly during my exams

[@PILOTCLIMB]

Many thanks for watching!! I'm glad the video helped you! Don't hesitate to ask any question you might have when watching the rest of the videos!

[@jakew9887]

Great presentation. Thanks

[@PILOTCLIMB]

You are very welcome

[@Josh-bl7hh]

Hello PILOTCLIMB could you please explain how tuning and identifying a DME that isn't co-located with a VOR works? since it operates in the UHF band. Is it the same as tuning in a VOR frequency? Lastly are X channel DME more accurate than Y channel DME? Keep up the good work and stay safe!

[@PILOTCLIMB]

Hey, I hope you are doing great!!! Many thanks for watching!! So, I have never seen a DME ''alone'', I'm not sure how useful would be a DME not co-located with a station that can provide you with a bearing. I guess setting the frequency on the NAV radios, if it is within the radio range, should work. In order to identify if the DME is working you can follow the morse code of the DME station. Sorry, but I don't know which channel is more accurate, this is a very good technical question! Let me know if you find the answer! I wish you a great day! Gabriele

[@PILOTCLIMB]

More questions about the Distance Measuring Equipment?? Leave a comment and I will help you out!

[@damienpoblete]

3:00 wouldn't it be 5 miles away if it takes 10 seconds for the reply at 1 mile/sec as the signal travels back & forth? Or I guess assumption of 1 sec = 1 nm is including back & forth in which case dont mind my comment :D Anyways great video, thanks a lot!

[@PILOTCLIMB]

Hey, many thanks for watching, yes I assumed it was back and forth... I hope the video helped you!

[@damienpoblete]

@@PILOTCLIMB Definitely helped! (anything helps when you know very little about most things aha). I'm a casual X-Plane flight simmer trying to learn the basics of navigation, GPS aside. So many 3-letter acronyms but slowly learning what DME VOR ADF CDI OBS NDB are, how to use them etc. Yesterday learnt how to correct heading to adjust for crosswind :D The youtube community of pilot teachers is fantastic and create a massive online school which is great!

[@shoebansari045]

123 nautical miles is the slant range or ground range?

[@PILOTCLIMB]

Hey,Thanks for watching!! could you confirm that the 123 nm is the result of 1.23*sqroot Aircraft height?

[@shoebansari045]

@@PILOTCLIMB yes, 1.23 into root of 10000, that is 100, so 1.23*100 is 123 narical miles, so that's the question

[@Kaseliya81]

Where is part 2?

[@PILOTCLIMB]

Hey, thanks for watching... Are you referring to the arc DME video??