An on glide slope indication from a tri-color VASI corresponds to what signal?

An on glide slope indication from a tri-color VASI corresponds to a green light signal. The tri-color VASI (Visual Approach Slope Indicator) provides pilots with crucial information regarding their approach path. When the aircraft is properly aligned with the approach angle, the VASI displays a green light. This green indication informs the pilot that they are at the correct altitude for a safe glide path to the runway.

Understanding the color signals is essential for safe landing operations. When the system displays green, it assures the pilot that they are neither too high nor too low in their approach, directly contributing to a smooth and safe landing process.