Singapore Appraoch & Departures Airspace
Singapore being something like 10nm in diameter, who controls the airspace around Changi, given that Singapore is surrounded by sovereign territory on all sides. Does Changi have control of other nations airspace.
Am I right to guess that Singapore control might be a multi national joint venture. Say if you are on approach to Batam Island (Indonesia), are you talking to an Indo controller that's in the Singapore Facility.
Just curious how it works.