fgdata/Models/Weather/rain2.xml

<?xml version="1.0"?>

<PropertyList>
 <path>rain2.ac</path>
 
<animation>
  <type>billboard</type>
  <spherical>false</spherical>
</animation>
 
<animation>
  <enable-hot type="bool">false</enable-hot>
</animation>

<effect>
  <inherits-from>Effects/rain-layer</inherits-from>
  <object-name>rect</object-name>
</effect>

	<animation>
		<type>noshadow</type>
	</animation>
</PropertyList>