Originally Posted by Some Drongo
It seems that he has a very good understanding...
Everyone in industry knows that all of the FIFO passenger jets are not "controlled every inch to the ground", they leave controlled airspace well before landing in many cases. In a lot of cases are not controlled for departure.
The you have airports like Avalon that have had arrivals when its non controlled, when when ML radar could provide that ability.
I used to get traffic on other IFR aircraft well before ADSB, and even before alphabet airspace, nothing has changed.