diff --git a/Systems/libraries.xml b/Systems/libraries.xml
index 0dfa1363..6063a4a4 100644
--- a/Systems/libraries.xml
+++ b/Systems/libraries.xml
@@ -553,14 +553,7 @@
 		<name>TAS</name>
 		<type>gain</type>
 		<gain>1.0</gain>
-		<input>
-			<expression>
-				<product>
-					<property>/velocities/uBody-fps</property> 
-					<value>0.592484</value>
-				</product>
-			</expression>
-		</input>
+		<input>/instrumentation/airspeed-indicator/true-speed-kt</input>
 		<output>/velocities/TAS</output>
 	</filter>