Private Pilot Private Exam

A below glide slope indication from a tri-color VASI is represented by what color light signal?

1. Green light signal

2. Amber light signal

3. Red light signal

4. White light signal

The correct answer is: Red light signal

A below glide slope indication from a tri-color VASI (Visual Approach Slope Indicator) is represented by a red light signal. The VASI system provides pilots with visual cues to assist in maintaining a proper glide path during approach to landing. When the lights are functioning correctly, the tri-color VASI shows: - A green light when the aircraft is on the proper glide slope. - A red light when the aircraft is below the glide slope. - An amber light when the aircraft is above the glide slope. Therefore, the red light indicates that the aircraft is too low and requires an adjustment to get back on the correct glide path. This information is crucial for pilots to ensure a safe and accurate approach to the runway.