Of all the airspace administered by VATPAC, the airspace found in Australia is by far the most complex. The airspace of the Melbourne and Brisbane FIRs can be divided into five functional groups: south-east radar, north-east radar, south-east regional, non-radar and oceanic.
En route Airspace Supplements provide greater detail of the en route airspace structure within continental Australian airspace.
This group covers the airspace surrounding Sydney, Canberra, Melbourne and Adelaide, as well as the airspace joining these cities. The en route corridors consist of Class A CTA from FL180 to FL600, underlain by Class C CTA from FL125 and Class E CTA from 8500 FT.
Around the capital city airports, Class C CTA exists in cylindrical steps ("upside-down wedding cake") and a Class C CTR exists over the airport. Capital city general aviation airports are overlain by Class D CTR which may vertically adjoin the Class C CTA.
Class C CTA steps underlain by Class D CTA steps are established around Albury. A Class D CTR is present over the airport.
This group covers the airspace north of Sydney, connecting major regional cities of Rockhampton, Mackay, Hamilton Island, Townsville and Cairns. The en route corridor consists of Class C CTA from FL180 to FL600, underlain by Class E CTA from 8500 FT.
Around Brisbane, Townsville and Cairns airports, Class C CTA exists in steps and a Class C CTR exists over the airport. Archerfield Airport in Brisbane is supported by a Class D CTR vertically adjoining Class C CTA.
Around Rockhampton, Mackay and Hamilton Island, Class C CTA exists in steps underlain by Class D CTA. A Class D CTR exists over the airports.
The corridor between Melbourne, Launceston and Hobart consists of Class A CTA between FL180 to FL600 and is underlain by Class E CTA between FL125 to FL180. Over Tasmania, Class C CTA steps down from FL125 in irregular steps and cylindrical steps around Hobart and Launceston. This is underlain by Class D CTA and a Class D CTR exists over each of the airports.
The corridors between Sydney to Dubbo and Melbourne to Mildura consist of Class A CTA from FL245 to FL600 with Class E CTA between FL125 to FL245.
This group covers the remaining airspace over continental Australia. This airspace mostly consists of Class A CTA from FL245 to FL600 underlain by Class E CTA from FL180 to FL245.
Around Perth and Darwin, Class C CTA exists in cylindrical steps down from FL180. Over the airport, a Class C CTR is established. Jandakot is supported by a Class D CTR.
Around Alice Springs, Class C CTA steps down in cylinders from FL180. Class D CTA exists below Class C. A Class D CTR exists over the airport.
At Karratha and Broome, Class E CTA steps down from FL180 to 1200 FT AGL. Class D CTA steps down from 5500 FT and the airports are supported by Class D CTR.
This group exists west, south and east of continental Australia and also covers the Nauru and Honiara FIRs. Class A OCA exists from FL245 to FL600.
Alphabet airspace classification is not used for much of the airspace within the Port Moresby FIR.
The upper airspace consists of Class A UTA from FL245 to FL460.
Around Port Moresby, CTA exists in steps between FL150 to FL245. TMA exists from 5000 FT to FL150.
New Caledonia is situated in the New Caledonia Sector of the Nadi FIR. Class A OCA exists from FL195 to FL600. Class D OCA exists from FL95 to the base of Class A.
Within 120 NM of Noumea, Class A TMA exists from FL195 to FL245. This is underlain by Class D TMA and the airport is capped by a Class D CTR. Tontoua Approach provides a procedural approach service within this Class A and D TMA airspace while Tontoua Tower provides control services within the Class D CTR.
Fiji is situated within the Nadi FIR. Class A Oceanic Airspace (OCA) exists above FL200 with Class D OCA between A095 and the base of Class A. Class D steps exist within 100nm of NN VOR and Nadi Approach provides a radar approach service within this airspace up to FL200.
Vanuatu is situated within the Port Vila Sector of the Nadi FIR. The en route airspace consists of Class A OCA from FL245 to FL600. Class D OCA exists from A095 to FL245 where a procedural control service is provided by NVVV_CTR (Port Vila Control).
Within 100 NM of Nadi, Class A CTA exists from FL200 to FL600, with Class D CTA stepping down from FL200 and a Class D CTR over the airport.
Airspace in the Tahiti FIR consists of Class A OCA from FL195 to FL660 and Class E OCA from FL45 to FL195.
Around Tahiti Airport, Class D TMA exists below FL195 and the airport is overlain by a Class D CTR.