airport visual approach slope indicator lighting
 

* 1.An airport lighting facility providing vertical visual approach slope guidance to aircraft during approach to landing by radiating a directional pattern of high intensity red and white focused light beams which indicate to the pilot that he is on path if he sees red/white, above path if white/white, and below path if red/red. Some airports serving large aircraft have three-bar Visual Approach Slope Indicators (VASI) which provide two visual glide paths to the same runway. (FAA4)

English Related Words* a slippery slope

* absorption indicator

* abu dhabi nadia international airport

* acapulco general juan n. alvarez airport

* acid-base indicator

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* adjustment indicator

* adsorption indicator

* adviser approach

* aerodrome lighting

* air speed indicator

* aircraft approach category

* aircraft approach category a

* aircraft approach category b

* aircraft approach category c