The PCL-TCV Tri-Color Visual Approach Slope Indicator (VASI) is a ground-based visual aid designed to assist pilots in maintaining a safe and consistent glide path during the final approach to landing at airports and heliports. This system utilizes a multi-light unit that projects three distinct colors—red, green, and amber—to indicate the pilot’s position relative to the desired glide slope. The system is intended for use at small airfields or heliports where simplicity and cost-effectiveness are prioritized over a more precise multi device system like a multi-light Precision Approach Path Indicator (PAPI). |
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