Originally Posted by
Ex FSO GRIFFO
And STILL NO 'satisfactory' system.
Class G airspace with a "Flight Information Centre" where IFR flight plans are mandatory and two way communication is mandatory. IFR - IFR traffic always provided. VFR flights can fly as they like, if they want they can call and get some form of alerting service. IFR - VFR and VFR - VFR may be provided.
At airports a "Traffic Information Zone" with "Aerodrome Fligth Information Service" is required for IFR operations, the zone is classified as G airspace with a requirement for two-way comm with the unit for all flights, traffic information provided between all aircraft. Most TIZ are about 20 NM radius.
That covers the entirety of Greenland below FL195, and works fine for the level of traffic there is, and have been working fine since the mid-70ties.
So I'm a little surprised Australia cut it away, cause it sounds like it was something similar you had.