Which color indicates "above the glide path" in a tri-color VASI?

In a tri-color VASI (Visual Approach Slope Indicator), the color that indicates "above the glide path" is amber. The VASI system uses color signals to provide pilots with information about their approach angle to the runway. When a pilot sees an amber light in a tri-color VASI, it means they are too high and should descend to align with the proper glide path.

The green light signifies being on the correct glide path, indicating that the pilot is at the appropriate descent angle for a safe approach. The red light indicates that the aircraft is below the glide path, warning the pilot to climb and regain the correct approach angle. Blue is not commonly used in tri-color VASI systems and does not convey useful information regarding glide path positioning.

Thus, amber effectively communicates essential guidance for safe landing approaches, making it crucial for pilots to recognize this indication during aviation operations.