What does the star on top of the blue circle indicate for Lunken airport on a sectional chart?

The presence of a star on top of a blue circle for Lunken Airport on a sectional chart signifies that the airport has a rotating beacon. This is a crucial detail for pilots and serves multiple purposes. Rotating beacons are typically used to help identify the airport's location, especially at night or in low visibility conditions. They emit a flashing light and can assist in navigating to the airport from a distance, indicating to pilots that they are approaching a lighted airport.

The blue circle itself denotes a public-use airport, and the rotating beacon enhances the visibility of that airport, aiding pilots in their approach and situational awareness. Understanding the significance of symbols and markings on sectional charts is essential for effective navigation and ensuring safety during flight operations.