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I work at an airport which closes at night. We have a control zone (class D), a TMA (also class D) and some surrounding airspace (class G/E). Tower and Approach control is provided locally during opening hours. When the airport closes, we call the area control centre responsible for the surrounding airspace, and they take over responsibility. In addition, ...


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To add to StevenS answer, a Class D airport will usually revert to a Class E or G airspace after the tower closes. The hours and the subsequent airspace change will be noted in the US Chart Supplement. Most of the Class B airports that I know of generally do not close. Some busy Class C and D airports also do not close. Although, the FAA has reduced hours on ...


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All airspace is ultimately owned by some Center (US: ARTCC, ICAO: ACC). Some is delegated to Approach facilities (US: TRACON), and Approach can sub-delegate part of their airspace to a Tower. And Center can delegate airspace directly to Towers without an overlying Approach. If any facility closes, it’s associated airspace automatically reverts back to ...


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