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abbreviated precision approach path indicator
airports	спрощений покажчик траєкторії точного заходження на посадку (apapi)
avia.	спрощений покажчик траєкторії точного заходження на посадку
English thesaurus
abbreviated precision approach path indicator
avia., Canada	A visual glide slope indicator VGSI consisting of only two light units normally situated on the left side of the runway in the form of a wing bar and indicating that the aircraft is on slope if the unit nearest the runway shows red and the unit furthest from the runway shows white, too high if both units show white, and too low if both units show red