What does a brown airport represent on a Jeppeson plate?

A brown airport on a Jeppesen plate indicates that there is no Instrument Approach Procedure (IAP) available for that airport. This designation helps pilots quickly determine that they can't rely on instrument approaches at that location, which is critical information when planning flights, especially in adverse weather conditions. Understanding the color coding on aviation charts is essential for safe navigation and flight planning, making it clear that pilots will need to be prepared to use visual flight rules (VFR) methods or other means to land at those airports.