In order fror CTAF to work, there would need to be quite drastic changes to the airspace structure and the operating practices of the ACCs.
Taking Doncaster as an example;
Replace the current controlled airspace with Class E and increase the VMC minima appropriately to proper ICAO minima.
Have the responsible ACC issue departure and approach clearances to aircraft and ensure separation of IFR vs IFR flights in the airspace.
Very much a 1 IFR flight at a time situation.
No radar service to arriving or departing flights until within ACC radar coverage.
Limited number of inbound or outbound routes and forget the idea of arriving or departing IFR into class G airspace.
Great Idea - bring it on!!!!
