How do transition work as an atc

hey guys bit of help how is a transition issued and what does it mean tbh bc idk

Transitions are when aircraft are flying through your airspace without the intent to land at your field. Your airspace (as tower) goes to 5000 ft AAL, so they’d only need to request a transition if they’re passing within 5000 feet of your aerodrome.

To calculate the transition altitude, a common method is to add 2500 to your airport elevation, and then round up to the nearest 500. Hope this helps!


many thanks helps a little still confused but i’m sure someone will simplify it

Is there a particular thing that you’re having trouble with? If so, I’d be happy to clarify further. :)

the calculation of the transition thingy

Of course. So, the typical pattern altitude is either 1000 ft AGL or 1500 ft AGL (former is for props, latter is for jets). Therefore, if you have a jet in the pattern, they’re going to be flying at 1500 AGL.

Now, to satisfy separation rules, you ideally want to have 1000 feet of vertical separation. So, since jets fly at 1500 AGL, an altitude that would satisfy those separation requirements is 1500 + 1000, or 2500 AGL. That’s where we get the 2500 from.

And then of course, since not all airports are at the same altitude, you’d add airport elevation + 2500 to find the final transition altitude. You may need to round up to the nearest 500 due to limitations of the interface (you’ll know why once you see it in action). It’s pretty simple once you get the hang of it, so just keep practicing.


as common,maybew 2500 agl for one aircraft is ok

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