Understanding different Altimeter Settings | QNE | QFE | QNH | Transition Layer

Hi. In this video we look at the different altimeter settings in an airplane. We also look at how these settings are used in an aircraft and when the transition is applied when an aircraft is in flight. We also look at the
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[@rythm9713]

so good, helped a lot, never stop making videos please!

[@JxJAVIATION]

Thank You! Check out my other videos as well!

[@narekvoskanyan2248]

Thank you for explaining

[@kowalskianalysis7733]

big up man

[@JxJAVIATION]

Thank You! Check out my other videos as well!

[@surendrakverma555]

Thanks 🙏

[@JxJAVIATION]

Thank You! Check out my other videos as well!

[@vfx7t]

QNH = Natural Horizon, QNE = Natural Earth, QFE=Field Elevation ;))

[@JxJAVIATION]

nice!!

[@mayurbaviskar7409]

Please make a video on balanced field

[@JxJAVIATION]

noted it

[@genccadamm]

What exactly does the transition layer do and how is it determined? How is the transation level determined? Why does a plane set qnh std at the transition altitude when climbing and why does a descending plane set local qnh at the transition level?

[@genccadamm]

How is the transition layer height value determined? between transit altitude and transit level.

[@tissuepaper9962]

the transition layer is a space just inside the bottom of Class A airspace. The top of the transition layer changes day by day and location by location depending on the barometric pressure (aka altimiter setting) on that day. Class A airspace starts at 18,000ft as measured by an altimeter set to 29.97 in Hg. The problem arises when the day's altimeter setting is lower than standard, because an aircraft climbing into the Class A will think they're lower than they really are and could conflict with other aircraft who have already changed their altimeter setting to standard. The top of the transition layer, therefore, is placed at the altitude where an aircraft with their altimeter set to the day's actual pressure will see 18,000ft on the dial. This might be as high as 19,500ft or higher according to an altimeter set to standard pressure.

[@tissuepaper9962]

this is also the difference between "altitude" and "flight level". the "flight levels" are measured with the altimeter set to standard, vs "altitude" being measured with the altimeter adjusted to the correct setting for the day and location.

[@tissuepaper9962]

​@@genccadamm the bottom of the transition layer is where an aircraft with their altimeter set to standard will read 18,000ft, which is the exact definition of FL180.

[@ObadiahJudith-n5v]

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