Might be worth mentioning that aircraft are not allowed to cruise within the transition layer, which is that boundary layer, normally of a 1000ft between the transition altitude and transition level. Also in the US the transition level will vary depending on QNH for that particular day, with a QNH of 1013 or above it will be the standard FL180, below 1013 transition level could be FL190 or FL200 if its a very low pressure day. In the US ATC can clear you down to FL180 and upon reaching that flight level, even though its the transition level you are not supposed to change your altimeter setting until descending below FL180. Not sure if this applies in Europe.
Afaik, 1000-1500ftthick( depending on QNH). Don't think applies to FAA airspace as they are flat FL180. Good question but we seldom got the kind of situation that you mentioned, in Europe TA usually 5500ft, Asia ,11000ft TA n FL130TL, depending on QNH. Hope it helps.cheers. Oh, your airline,I'm sure has checklist n enunciation for TL / TA. But let's hear what CMDR Gab n others experts have to say..cheers.
Captain Gabrielle, If there's lot of incoming and outgoing traffic ,like in busy airports, some pilots are still on Standard Pressure , in the act of changing to local QNH, whereas pilots in traffic ahead have already changed to Local QNH... The transition level is a ZONE isn't it.?.Suppose there is pilot delay in changing over the QNH how much margin in terms of height is allowed? .Any idea how thick the zone of the transition level is( 500 to 1000ft)?
Good morning, I made a separate video about that, anyway, there is a layer called Transition Layer, and this changes depending on the QNH. Thanks for watching
![Converted Meteorological Visibility - [CMV Aviation].](http://i.ytimg.com/vi/tO9OC_rNi3c/mqdefault.jpg)
![Altimeter Settings [QNH, 1013 Hpa, Transition Altitude and, Transition Level].](/img/n.gif)
Thank you so much for the vital information you provided ⭐⭐⭐⭐🙏🙏
You are very welcome!
Might be worth mentioning that aircraft are not allowed to cruise within the transition layer, which is that boundary layer, normally of a 1000ft between the transition altitude and transition level.
Also in the US the transition level will vary depending on QNH for that particular day, with a QNH of 1013 or above it will be the standard FL180, below 1013 transition level could be FL190 or FL200 if its a very low pressure day.
In the US ATC can clear you down to FL180 and upon reaching that flight level, even though its the transition level you are not supposed to change your altimeter setting until descending below FL180. Not sure if this applies in Europe.
Great comment! Thanks for watching!
Afaik, 1000-1500ftthick( depending on QNH). Don't think applies to FAA airspace as they are flat FL180.
Good question but we seldom got the kind of situation that you mentioned, in Europe TA usually 5500ft, Asia ,11000ft TA n FL130TL, depending on QNH.
Hope it helps.cheers.
Oh, your airline,I'm sure has checklist n enunciation for TL / TA.
But let's hear what CMDR Gab n others experts have to say..cheers.
Great answer! Check the video about Transition Altitude and Level that I made in the past! Thanks for watching!
Captain Gabrielle, If there's lot of incoming and outgoing traffic ,like in busy airports, some pilots are still on Standard Pressure , in the act of changing to local QNH, whereas pilots in traffic ahead have already changed to Local QNH... The transition level is a ZONE isn't it.?.Suppose there is pilot delay in changing over the QNH how much margin in terms of height is allowed? .Any idea how thick the zone of the transition level is( 500 to 1000ft)?
Good morning, I made a separate video about that, anyway, there is a layer called Transition Layer, and this changes depending on the QNH. Thanks for watching
Comment below with your questions and thoughts👇
Bravo 👏
Can you tell please , if atc tell you that qnh at destination airport is fe: 1010 hpa. Is it hot or cold on the ground?