Which color indicates Class C airspace on a sectional chart?

Class C airspace is indicated on sectional charts using a magenta color. This specific color differentiates Class C airspace from other airspace classes, making it easily identifiable for pilots navigating in and around these areas.

Class C airspace typically surrounds airports with a significant level of traffic and provides additional communication and processing services to improve safety and efficiency in the vicinity of those airports. The use of magenta helps pilots quickly recognize the boundaries and requirements associated with this airspace, which includes obtaining clearance before entering.

In contrast, other colors on sectional charts denote different types of airspace: blue often represents Class B airspace, green can signify various types of airspace depending on other chart elements, and yellow is not used for airspace classification on sectional charts. This color-coding system is essential for pilots to operate safely and effectively within the National Airspace System.