<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">course lights</topic></authority><related type="broader"><topic>aeronautical ground lights</topic></related><variant type="other"><topic>course light</topic></variant><variant type="other"><topic>lights, course</topic></variant> <note xml:lang="en"><![CDATA[ Aeronautical ground lights supplementing an airway beacon, used to indicate the direction of the airway and to identify by coded signal the location of the airway beacon with which it is associated. ]]></note></mads>