On the chart, controlled airspace floors of 1200ft above the ground are defined by a ________ shaded area.

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The reference to controlled airspace floors of 1200 feet above the ground being depicted in a specific shaded area on charts corresponds to the blue vignette. The blue color generally indicates Class C and Class D airspace on aviation charts, which includes areas where certain operations are subject to specific regulations and require communication with air traffic control, especially in proximity to airports. Understanding how different shades are used on aeronautical charts is essential for pilots, including those operating unmanned aircraft systems (UAS), as it ensures they are aware of airspace boundaries and can safely navigate their operations while complying with regulations.

In contrast, the other shades represent different types of airspace or classifications. The green vignette is typically used to denote Class G airspace, which is uncontrolled. The yellow vignette may indicate a transitioning or less defined airspace scenario, and the red vignette is usually applied to areas with significant restrictions or hazards that require caution. Familiarizing oneself with these distinctions is crucial for ensuring safe and legal flight operations.

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