QNE Is Not A Pressure Reference -[What exactly it is and why do we use it during flight Operations].

Подписаться 22 тыс.

Просмотров 1,5 тыс.

50% 1

Today's video is about the QNE.
By the end of this episode, you will know what exactly it is and why we use it during Flight Operations.
The QNE is not a pressure reference, I have been flying for more than 15 years and I always referred to it as a pressure reference, however, if you look at its definition the QNE is the difference in feet between the standard pressure reference of 1013.25Hpa (29.92in hg) and your aircraft.
The QNH is the pressure at the mean sea level and the difference in feet between the QNH and your aircraft its called Altitude.
So as you can see the QNH is a pressure reference while the QNE is a heigh difference expressed in feet.
If you use the 1013.25hpa (29.92 in hg) you will be flying FLIGHT LEVEL (FL).
You need to fly using the standard pressure reference in order to maintain the separation with other traffics once the terrain is no longer a factor and you are flying above the transition altitude.
This procedure makes sure that you use the same altimeter reference of the planes around you.
Imagine if each aircraft uses the qnh from the departure airport, it won't be possible to obtain a vertical separation since each one would have a different pressure reference on the altimeter.
To learn more about QNH, QNE and QFE watch the following video:
• QNH, QFE and QNE - [A...
Watch the transition altitude Video here:
• Altimeter Setting - [T...
To subscribe to the channel click the link below:
/ @pilotclimb
If you feel like donating to the PILOTCLIMB channel you can send a PayPal or a crypto transaction to the addresses below:
PayPal address: www.paypal.me/...
Bitcoin address: 3DMaWztGYufX9WH33hSVNouwVpMEBA6m1t
Etherium address: 0x486fcA0234e2950D2068d1171379F5Efb36B911A
#PILOTCLIMB
==============================================================
Disclaimer:
THIS VIDEO IS FOR ENTERTAINMENT PURPOSES ONLY.
NOT FOR REAL-LIFE OPERATIONS.
PLEASE REFER TO THE OFFICIAL MANUAL AND DOCUMENTATION.
==============================================================

Опубликовано:

6 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 23

@PILOTCLIMB 3 года назад

Any questions?? Leave a comment below and I will help you out!! Happy Landings!

@MrCed0802 3 года назад

Quick one, will you consider making some Navs videos by any chance? (From an Atpl student)

@PILOTCLIMB 3 года назад

@@MrCed0802 Hey, let me know if you have any topic in particular that you want me to make a video and I will take it into consideration.

@MrCed0802 3 года назад

Your channel deserves way more viewers..but no doubt will soon be at the level it deserves to be. Thanks again

@PILOTCLIMB 3 года назад

Many Thanks for watching the video and the great Support!!

@raccoonair 3 года назад

Your explanation in the video is perfect, but the title may be confusing, since QNE is the Standard Pressure Reference, thus a Pressure Reference. Title suggestion: Vertical distance from the standard Pressure Reference (QNE) is NOT called Altitude, but FL. Thanks for all your efforts in making these tutorials.

@PILOTCLIMB 3 года назад

Hey, I hope you are doing great! Many thanks for watching and the comment!! We commonly refer to the QNE as the standard pressure reference, however if you look closely to its definition it is not a Pressure Reference. The QNE is the difference expressed in feet that there is between the standard 1013,25hpa and you aircraft. So, while the QNH and the QFE are pressure references the QNE is a feet difference. I wish you a great day Gabriele Pilotclimb

@raccoonair 3 года назад

@@PILOTCLIMB I do agree that it is referred to as a theoretical level (standard datum plane) and indeed not a pressure reference. However vertical distance is measured from this pressure datum plane (as all other Q’s from a reference plane) and thus may be confusing to some students. Thanks for your reply.

@luissol3964 Год назад

Which barometric reference uses a pilot that is intented to land in La PAZ, BOLIVIA? QNH or QNE?? ICAO "SLLP"

@PILOTCLIMB Год назад

Aircraft on landing should you use QNH, some airports use QFE, check the local procedure of the Airport you mentioned

@adamdry9423 3 месяца назад

Hello! So will an airfield give you the QNE in feet then? So you fly with 1013 on the alimeter and then just recalculate the indicated altitude in your head?

@saadaldossary4916 3 года назад

Thank you captain , I would say there is another use for QNE is when there is a terrain you can know it's altitude from the standard pressure so when you at FL150 you and the terrain at FL005 you will know that the difference is 10000ft . What do you think ?? Also I want to ask you , at which type of altitude the terrain will show to me ? QNH right ?

@PILOTCLIMB 3 года назад

Hey many thanks for watching and the comment!! The problem of using the standard pressure (1013,25hpa) as a reference to get terrain separation is that you are not using the same reference of the terrain elevation, since the 1013hpa isobar, can be below or above the mean sea level depending on the QNH. In order to separate yourself safely from the terrain you should use the QNH, which the pressure reference at the mean sea level. The terrain utilized the mean sea level as a reference. Let me know if you still have any questions! Have a great day

@saadaldossary4916 3 года назад

I got it capt 👍and thank you for everything, I really liked your channel . Keep up the good work

@phoonjzc 2 года назад

@@PILOTCLIMB but if 2 planes are at the same place at the same airport at same time using qne, why terrain separation fails?

@steffenleo5997 3 года назад

Good Day Capt, is pressure altitude similiar to QNE?

@PILOTCLIMB 3 года назад

Hey, I hope you are doing great! They are similar since they are the difference in feet from the standard isobar of 1013.25hpa. Please note that commonly we refer as QNE the standard isobar 1013.25hpa, however if you look into the QNE definition you will see that is the difference expressed in feet that there is betwen the 1013.25hpa and your Aircraft! Let me know if you have more questions!

@ClanLawrence 2 года назад

Sorry, but your explanation and definition of QNE is incorrect. This seems to be a common misconception all over the internet, from some sources that should know better. What you are describing as QNE is the Standard Pressure Setting (SPS or STD). QNE is a different thing altogether. QNE is not a Subscale Setting, it is an altitude reading, more specifically it is the indicated altitude of an aircraft on the ground, at the runway threshold, with 1013 set on the subscale. It is used very rarely, in conditions of exceptionally low pressure where the QNH or QFE is so low it is past the range of the Altimeter Subscale and so is impossible to set.

@PILOTCLIMB 2 года назад

You have posted the same comment in two different videos. I'm sure you even event watched this video! Please watch the videos before providing any feedback!

@ClanLawrence 2 года назад

@@PILOTCLIMB I have yes. Because it's a widespread misunderstanding that I aim to correct :) I have watched your video. Your definition of QNE is incorrect, like I stated. The QNE is the reading in feet on an altimeter with the sub-scale set to STD, when the aircraft is on the ground at the landing runway threshold (Not in flight). It has got nothing to do with aircraft in flight, or with Flight Levels at all, and is used very rarely, in very specific circumstances.

@annevanderwaal5916 3 месяца назад

@@ClanLawrence Fully agree! QNE is indeed defined as the pressure-altitude in feet of the landing runway threshold, at least in Europe (where I live). However, in North America the term QNE-setting is formalised by the authorities for flying at Flight Levels, i.e., in that case it is pressure-altitude in feet, as explained by PILOTCLIMB.

@ClanLawrence 3 месяца назад

@annevanderwaal5916 The Q-Codes are a British invention. Another country adopting them and then changing the definition of one of them has safety implications, albeit very minor. Either way, the US definition is just incorrect, no matter how many text books publish it.

@ClanLawrence 2 месяца назад

@@annevanderwaal5916 Yep. I think the FAA had a bit of a misunderstanding when they adopted Q-Codes. Silly Americans :P