What do the colored arcs on the airspeed indicator represent?

The colored arcs on the airspeed indicator represent different airspeed ranges and limits, which are crucial for safe and efficient flight operations. Each color-coded section— such as the green arc, yellow arc, and red radial line—indicates specific operational parameters. For example, the green arc typically shows the normal operating range, where the aircraft can fly safely without risk of stalling or exceeding structural limits. The yellow arc often indicates cautionary speeds where performance may be compromised, and the red radial line represents the maximum airspeed limit for the aircraft, beyond which structural damage could occur.

Understanding these color-coded segments is essential for pilots as they provide visual cues for maintaining proper airspeed in various phases of flight, such as takeoff, climbing, cruising, and landing. Awareness of airspeed limitations and ranges helps ensure compliance with operational safety standards and enhances the overall safety of the flight operation.