Visual Docking Guidance System
A stand guidance system is a system which gives information to a pilot attempting to park an aircraft at an airport stand, usually via visual methods, leading to the term ''Visual Docking Guidance System'' (VDGS) and also ''A-VDGS'' (the A standing for advanced) This allows them to remain clear of obstructions and ensures that jetways can reach the aircraft. AGNIS VDGS Azimuth Guidance for Nose-In Stand is one of the most popular forms of stand guidance. It consists of two coloured lights mounted side by side. If the pilot is on the stand centreline they will see two green lights. If they are off centreline, one of the lights will appear red and the pilot then steers towards the green one. AGNIS alone provides only azimuth guidance, it does not inform pilots when they should stop. It is relatively imprecise but cheap to implement and reliable. PAPA The Parallax Aircraft Parking Aid is frequently combined with an AGNIS system, informing flight crews when to stop. The device feature ...
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