airspace is defined below and allows IFR and VFR operations. Both IFR and VFR operations are required to have permanent two-way radio contact with ATC. IFR flights are separated from each other and from VFR flights. VFR flights are separated from IFR flights and are provided traffic information about other VFR flights. Permission for using airspace is required except for the special cases listed in clause 114 of the Federal rules for using Russian air space. Class D is not used. Class E is not used. Class F is not used. Class G airspace is defined wherever Class A and Class C airspaces are not defined. Class G airspace allows IFR and VFR operations. For altitudes less than the speed must not exceed . Flights are provided with flight information service as requested. IFR flights are required to have permanent two-way radio contact with ATC. No separation is provided by ATC. No permission for using airspace is required. Airspace controlled by Russia outside the territory of Russia has different division into classes and includes redefined Class A and Class G, but no class C airspace. Specific boundaries of airspaces are determined by the Order of the Ministry of Transport of the Russian Federation #199 of September 15, 2010. Sweden In Sweden, airspace is divided into airspace class C and G only with a small E class area stretching over the Danish border into Swedish airspace. Class C is used for all controlled airspace. Class E is used for Area L3, a small area southwest of Sweden, within Sweden FIR but controlled by ACC København. Class G is used elsewhere. United Kingdom In addition the UK has a couple of special classes of airspace that do not fall within the ICAO classes: Aerodrome traffic zones (ATZ) are circular zones around an airport with a radius of 2 nmi or 2.5 nmi depending on runway length, extending from the surface to AAL (above aerodrome level). Aircraft within an ATZ must obey the instructions of the tower controller (if present), or must make radio contact with the Aerodrome Flight Information Service unit or Air/Ground Communication Service unit for the aerodrome before entering the zone (in the case of an uncontrolled airfield), or must obey ground signals if non-radio. Military air traffic zones (MATZ) are zones around military air bases in class G airspace. Military aircraft treat these as if they are controlled airspace;