Originally Posted by
parishiltons
There's almost never any segregation or separation by design in RRO! But if they were using the same runway the SID/STAR design does provide segregation/separation. And the aeroplane does not know whether or not an ATC service is available - it will fly what it is programmed to do regardless of the airspace status.
That is my exact point and the only ones who really know what combinations of SID/STAR is compatible are the ATC responsible for the airspace. There is no guidance for pilots as to which SID/STAR are safe for traffic separation OCTA, even less protection if an aircraft flies a wrong altitude or track which would be alerted to a controller in CTA. So pilots assigning themselves SID/STAR OCTA is fraught with danger and assumptions that you have separation standards, when those standards only apply when the right selection of SID/STAR are assigned by a controller. You can say the QF pilot should have taken off in the other direction? Why if the Jetstar is still 50nm away, how would they know there is a SID conflict at 30nm, and there in lies the problem of using them OCTA (that being a theoretical case if the RUSKA vs VEGPU was the issue).