When an aircraft is landing near the boundary of another center's airspace, what must the controller do?

When an aircraft is landing near the boundary of another center's airspace, coordinating and issuing clearance for a normal descent is crucial for ensuring the aircraft transitions safely from one airspace to another. This involves communication with both the aircraft and the other center to ensure that all parties are aware of the aircraft’s intentions and can manage its approach appropriately.

By coordinating the descent, the controller helps maintain safe separation from other aircraft and ensures compliance with air traffic regulations. This action also prepares the aircraft to be handed off seamlessly to the next air traffic control jurisdiction if needed, preventing any disruptions during critical flight operations like landing.

Other options, such as requesting emergency landing procedures, may not be necessary unless there is an actual emergency. Diverting the aircraft to another airport could be inappropriate unless there are safety concerns, and providing visual flight rules instructions may not be suitable in controlled airspace where instrument flight rules are typically used. Thus, coordinating and issuing clearance is the most logical and effective response in this scenario.