Uir/fir
03-08-2021, 01:26 PM
#1
Dabbling in Pacifism
Thread Starter
Joined APC: Aug 2011
Position: Speed of sound tour
Posts: 115
Uir/fir
Legit question, no one can tell me at What’s the difference between a UIR and an FIR? I know that it’s a UIR= Upper flight Information Region and Flight information region, I see that altitudes are listed on charts but they are very straight forward, basically UIR correspond to class A. I fly basically in the US, Carib, and Central America, is this An ICAO thing? Is it just basically an FIR offering the same services but it differentiates to higher altitudes? For ICAO purposes... not like it has ever impacted me but I see the chart and wonder why have two things like FIR/UIR listed.
03-08-2021, 01:50 PM
#2
Has a furrowed brow
Joined APC: Dec 2019
Posts: 1,160
It’s been awhile, so someone smarter may be able to chime in...
UIRs are upper FIRs that allow high alt traffic to pass through one continuous IR instead of many FIRs.
The only one I can think of is in Germany.
But imagine if ATL, JAX, and MEM Center all were separated at low alt (FIRs), but you talked to ATL only (UIR) if you were transiting those at high altitudes.
UIRs are upper FIRs that allow high alt traffic to pass through one continuous IR instead of many FIRs.
The only one I can think of is in Germany.
But imagine if ATL, JAX, and MEM Center all were separated at low alt (FIRs), but you talked to ATL only (UIR) if you were transiting those at high altitudes.
