Which of the following is NOT included in the information provided by VNCs?

VNCs, or Visual Navigation Charts, are designed primarily to assist pilots in visual flight rules (VFR) operations. They provide critical information that supports navigation, including topographic details and various features surrounding the flight route.

Hydrography refers to water bodies, such as lakes and rivers, which VNCs include to help pilots identify navigation landmarks. Airways and controlled airspace are also depicted on VNCs as these are vital for understanding the airspace structure in which they operate. Additionally, enroute hazards, such as terrain features and obstacles that could pose a risk during flight, are included to ensure pilot safety.

Weather advisories, however, are not a feature of VNCs. Weather information is typically provided through other means, such as aviation weather services or updates from air traffic control. Therefore, because VNCs do not encompass weather advisories, this option is identified as the one that is not included in the chart details provided by VNCs.