When on the ATC it says for example LONDON FIR REGION what is this do I need to tune into this click it but its just a blank box
“FIR” means center. The white box shows you in what region the Center Frequency is. For example, if it covers all of England, and you’re in France, you don’t need to tune into it. You’d only need to tune into the Center Frequency if your plane is inside of it.
A quick explanation of what the Center Frequency is:
It’s basically for your cruise phase of flight, in busy airspaces. ATC makes sure that you don’t lose separation with any aircraft. This can also be used during descent and climb, but if you’re in early climb/late descent, if there’s an approach or departure frequency, you should tune into that.
Hope this helps!
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