State aircraft that are infrequent users of the Sarajevo FIR (or sectors, as applicable) where 8.33 
KHZ channel spacing is in actual use, are permanently exempted from carriage requirement, provided that they are able to communicate using 
UHF. They will be accommodated on 
UHF frequencies 331.025 
MHZ and/or on 
VHF 25 
KHZ in the sectors of Sarajevo 
ACC (
BHACC) or on the other 
UHF frequencies of Beograd ACC and Zagreb ACC in the delegated part of Sarajevo FIR.