fgdata/AI/Aircraft/A321/A321-main.xml

<?xml version="1.0"?>
<PropertyList>
  <description>A321</description>
  <author>Brett Harrison</author>
  <path>Models/A321.ac</path>
  <animation>
    <type>select</type>
    <object-name>gear</object-name>
    <condition>
      <greater-than>
        <property>gear/gear[0]/position-norm</property>
        <value>0.25</value>
      </greater-than>
    </condition>
  </animation>
  <!-- Add Navigation Lights Objects -->
  <model>
    <path>Lights/A321-NavLights.xml</path>
  </model>
</PropertyList>