Classes of Airspace

The following table summarises the services and requirements for the various classes of airspace used in the VATPAC division. AIP ENR 1.4

Class	Flight Rules	Separation provided	Service Provided	Airspace Speed Limitation	Radio Communication Requirements	Subject to ATC Clearance
A	IFR	All aircraft	ATC Service	N/A	Continuous two-way	Yes
	VFR not permitted
C	IFR	IFR from IFR, IFR from VFR, IFR from SVFR	ATC Service	N/A	Continuous two-way	Yes
	VFR	VFR from IFR	ATC service for separation from IFR, VFR/VFR Traffic Info (and traffic avoidance advice on request)	250KT IAS below 10,000FT AMSL	Continuous two-way	Yes
	SVFR	SVFR from SVFR, when visibility is less than VMC	ATC Service	As Above	Continuous two-way	Yes
D	IFR	IFR from IFR, IFR from SVFR	ATC Service, IFR/VFR Traffic Info	200KT IAS at or below 2,500FT AGL within 4NM of the primary Class D aerodrome, 250KT IAS in the remaining Class D airspace	Continuous two-way	Yes
	VFR	Nil	ATC service, VFR/VFR Traffic Info	As Above	Continuous two-way	Yes
	SVFR	SVFR from SVFR, when visibility is less than VMC	ATC service	As above	Continuous two-way	Yes
E	IFR	IFR from IFR	IFR/IFR ATC Service, IFR/VFR Traffic info as far as is practicable	250KT IAS below 10,000FT AMSL	Continuous two-way	Yes
	VFR	Nil	FIS SIS on request (permitting ATC workload)	As Above	Continuous two-way	No
G	IFR	Nil	FIS	250KT IAS below 10,000FT AMSL	Continuous two-way	No
	VFR	Nil	FIS SIS on request (permitting ATC workload)	As Above	VHF radio required above 5,000FT AMSL, and at aerodromes where carriage and use of radio is required	No