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abbreviated visual approach slope indicator
avia., amer.	indicateur visuel de pente d’approche simplifié
English thesaurus
abbreviated visual approach slope indicator
avia., amer.	A visual glide slope indicator VGSI consisting of only two light units normally situated on the left side of the runway, one upwind and one downwind, and indicating that the aircraft is on slope if the upwind unit shows red and the downwind unit shows white, too high if both units show white, and too low if both units show red
Abbreviated Visual Approach Slope Indicator
abbr., scottish	AVASI

abbreviated visual approach slope indicator: 1 phrase in 1 subject

Transport

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