Originally Posted by
BlockNotAvailable
All we do is separate to the base of CTA, then it's up to the pilots. I can tell you they get closer than our sep standards allow. That's up to them. What you are suggesting is just do what US ATCOs do. CAN YOU TELL ME WHAT THEY DO? Please?
If they are getting closer than ATC separation standards allow, hopefully they are operating and separating visually. Otherwise it is just separation based on the "If no-one saw it it didn't happen" big sky standard. There is no basis to believe that pilots can self separate in IMC with equivalent safety as provided by ATC. Self separation in IMC should have greater separation than allowed under ATC control.
https://www.atsb.gov.au/publications...r/ao-2008-030/