On a Jeppesen chart, what does a blue airport indicate?

On a Jeppesen chart, a blue airport symbol indicates that the airport has a published approach. This means that the airport is equipped with the necessary procedures that allow for instrument flight operations, enabling pilots to execute approaches to land safely, especially in poor weather conditions. The presence of a published approach signifies that the airport has been evaluated and provides defined pathways for arriving aircraft, which is crucial for maintaining safety and efficiency in air travel.

The other options relate to aspects of airport operation but do not apply to the blue symbol specifically: a control tower, military status, or non-towered operations would be represented differently on charts.