Definition
The block of airspace surrounding one or more airports in which an Approach Control facility is responsible for separating, sequencing, and providing radar services to arriving and departing IFR aircraft. It typically extends from the surface up to a defined altitude (often around 10,000 feet MSL) and outward from the primary airport for a specified radius, with boundaries published for each facility.
Plain English
The chunk of sky around an airport (or group of airports) that the local Approach Control handles. Inside this area, Approach Control is the agency that talks to IFR aircraft going in or out.
Context Anchor
Seen in instrument flying and tower en route control discussions, especially when a route stays within airspace handled by approach control rather than by a long-distance control facility.
Derivation
Approach means coming nearer to something. In aviation, it often refers to aircraft moving toward an airport to land. Control means directing traffic safely. Together, approach control names the controller service that manages aircraft near airports during arrivals, departures, and nearby transitions.
Why Pilots Care
Pilots on IFR flights must know when they are inside this area so they contact the correct controller for sequencing and clearance.
Intuition Check
Do not read this as just any area where an airplane is approaching a runway. An approach control area is a specific airspace responsibility area handled by approach controllers.
Example Sentence 1
After departure, the tower handed us off to Approach, and we stayed inside that approach control area until we were transferred to the next facility.
Example Sentence 2
Tower en route procedures often transfer aircraft at the edge of the approach control area.