Visual Approach Slope Indicator System
From EUROCONTROL ATM Lexicon
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| Term | Visual Approach Slope Indicator System |
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Abbreviation
- VASIS
Definition
An airport lighting facility providing vertical approach slope guidance to aircraft during approach to landing.
Definition Source
- AIFDD
Note
A directional pattern of high intensity red and white focused light beams which indicate to the pilot that they are either: 'on path' if they see red/white; 'above path' if white/white; and 'below path' if red/red.
