Commercial Pilot License (CPL) Practice Exam 2025 - Free Commercial Pilot License Practice Questions and Study Guide

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What color is the light that indicates an aircraft is on the flight path in a Pulsating VASI system?

Pulsating red

Pulsating amber

Pulsating white

In a Pulsating VASI (Visual Approach Slope Indicator) system, the light that indicates an aircraft is on the correct flight path is a pulsating white color. This system is designed to provide visual guidance to pilots during their approach to landing, and the light patterns are crucial for indicating the aircraft’s position in relation to the ideal glide slope.

When the light displays a pulsating white, it signals that the aircraft is at the appropriate altitude for landing. In contrast, other colors in the system indicate different situations. For example, if the light were to display pulsating red, it would indicate that the aircraft is below the desired glide path, while solid white signifies that the aircraft is too high. Understanding these color signals is essential for pilots to ensure safe and effective landings.

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Solid white

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