A couple of Questions for you gurus

[m-dot]

Questions relate to Australian Airspace Please reply if you can help;

Q1. When we talk about oceanic naviagtion or procedures, where do they start? What is the boundary and why? When is an aircraft oceanic?

Q2. What does the CYC function on a Wx radar actually do apart from flash the red areas? (Primus/Honeywell)

[Wodrick]

Q1 don't know
Q2 It flashes the red bits ! that's all

[Erebus]

Oceanic airspace is controlled airspace between FL245 and FL460 not designated as Class A airspace, and controlled airspace over continental Australia at and below FL600 excluding airspace designated as Class D or Class E, or those control zones in which GAAP are used.