drshmoo It does NOT matter what the size is, be it 5, 10, 15nm or whatever. Unless you are in a Cessna 150 or a Bell47, you should have made your calls and sorted the traffic out well before the stated boundary. If NAS is to take up the NA model, then CTAFs do not have a published size. Its up to the pilot to make the calls and sort himself out PRIOR to the circuit. Again, the CTAF is a PROCEDURE, not a block of airspace. It really should have no boundaries, but does so, (in Oz anyway) to try and keep it simple, but maybe we are too simple? As I have said before the place to make your calls is around 7 minutes out (minimum) - that should have most sorted out by the circuit. And remember you do NOT have to talk to everyone else that makes a call. A simple b'cast should do the job in all cases, leaving direct exchanges to when a conflict needs to be resolved.
