Can a STAR serve more than one airport?

A Standard Terminal Arrival Route (STAR) is designed to streamline the arrival of aircraft into busy terminal areas, providing a standardized path that pilots can follow. The nature of STARs is such that they can indeed be designed to serve more than one airport, particularly when those airports are located in close proximity to each other and share common air traffic control procedures.

For instance, multiple airports within the same metropolitan area may utilize a shared STAR to optimize the flow of air traffic, allowing aircraft from different departure points to converge on similar routes as they approach these airports. This enhances efficiency and safety in managing arrivals, as it allows air traffic controllers to maintain organized sequencing of aircraft as they descend towards their designated airports.

In contrast, the other options outline scenarios that do not accurately represent how STARs function. While certain specific conditions may impact the use of a STAR (like emergencies or restrictions for certain types of airlines), the fundamental design of STARs allows them to operationally benefit more than one airport simultaneously.