Originally Posted by Say Again, Over!
There are some instances where the 3NM radar separation might not need to be applied. If a heading off the airport that lies close to the approach to the other airport can be proven (throught a flight check or other esoterical method) to be geographically clear, then it could be done.
Procedures would have to be established, I suppose, providing for the arrival to be fully established prior to a certain point on final or prior to releasing the succeeding aircraft. The type of approach in use (precision or not) would have to be considered as well.
SAO
if all departures from he northern runway went north immediately after departure, and the southern went sout, before any turns then they could possibly get CAA to give a deemed geographical separation on departure - subsequent routings then would be subject to coordination between units