From c7a8502893091b9acab9c23c29c5c18d316704f3 Mon Sep 17 00:00:00 2001
From: Joshua Davidson <joshuadavidson2000@gmail.com>
Date: Sat, 23 Jun 2018 11:43:08 -0400
Subject: [PATCH] 3D: Fix missing pushback, enable the new model for it

---
 Models/A320-100-CFM.xml              |  24 +-
 Models/A320-200-CFM.xml              |  23 +-
 Models/A320-200-IAE.xml              |  21 +-
 Models/A320neo-CFM.xml               |  26 +-
 Models/A320neo-PW.xml                |  24 +-
 Models/Goldhofert-autopush.xml       | 130 ----------
 Models/Services/Pushback/Douglas.xml | 371 +++++++++++++--------------
 Systems/a320-fcs.xml                 |   7 +
 revision.txt                         |   2 +-
 9 files changed, 227 insertions(+), 401 deletions(-)
 delete mode 100644 Models/Goldhofert-autopush.xml

diff --git a/Models/A320-100-CFM.xml b/Models/A320-100-CFM.xml
index 4e6fb174..b03a9ab4 100644
--- a/Models/A320-100-CFM.xml
+++ b/Models/A320-100-CFM.xml
@@ -15,12 +15,11 @@
 		<z-m>1.7005004</z-m>
 	</offsets>
 
-
 	<model>
 		<name>Fuselage</name>
 		<path>Aircraft/IDG-A32X/Models/Fuselages/A320-100/fuselage.xml</path>
-
-	</model>		
+	</model>
+	
 	<!-- Separate Flightdeck to fit the modified nose -->
 	<model>
 		<name>Flightdeck</name>
@@ -316,23 +315,14 @@
 	<!-- Other non-aircraft models -->
 	<model>
 		<name>Pushback</name>
-		<path>Models/Goldhofert-autopush.xml</path>
+		<path>Aircraft/IDG-A32X/Models/Services/Pushback/Douglas.xml</path>
 		<offsets>
-			<x-m>5.55</x-m>
+			<x-m>6.0</x-m>
 			<y-m>0</y-m>
-			<z-m>-4.14</z-m>
-<!--			<x-m>7.55</x-m>
-			<y-m>0</y-m>
-			<z-m>-4.14</z-m> -->
-
+			<z-m>-4.24</z-m>
 		</offsets>
 	</model>
-        <model>
-                <path>Aircraft/Generic/marker.xml</path>
-        </model>
-
-
-
+	
 	<!-- LIVERY SELECT -->
 	<!-- Animation -->
 	<animation>
@@ -362,7 +352,7 @@
 		 livery_update.stop();
 		</unload>
 	</nasal>
-    
+	
 	<!-- Ground Services -->    
 	<model>
 		<name>ground_services</name>
diff --git a/Models/A320-200-CFM.xml b/Models/A320-200-CFM.xml
index 3b2f71bd..4744be8e 100644
--- a/Models/A320-200-CFM.xml
+++ b/Models/A320-200-CFM.xml
@@ -18,8 +18,8 @@
 	<model>
 		<name>Fuselage</name>
 		<path>Aircraft/IDG-A32X/Models/Fuselages/A320/fuselage.xml</path>
-	</model>		
-
+	</model>
+	
 	<!-- Separate Flightdeck to fit the modified nose -->
 	<model>
 		<name>Flightdeck</name>
@@ -341,27 +341,18 @@
 			<z-m>-1.25</z-m>
 		</offsets>
 	</model>
-        <model>
-                <path>Aircraft/Generic/marker.xml</path>
-        </model>
 
 	<!-- Other non-aircraft models -->
 	<model>
 		<name>Pushback</name>
-		<path>Models/Goldhofert-autopush.xml</path>
+		<path>Aircraft/IDG-A32X/Models/Services/Pushback/Douglas.xml</path>
 		<offsets>
-			<x-m>5.55</x-m>
+			<x-m>6.0</x-m>
 			<y-m>0</y-m>
-			<z-m>-4.14</z-m>
-<!--			<x-m>7.55</x-m>
-			<y-m>0</y-m>
-			<z-m>-4.14</z-m> -->
-
+			<z-m>-4.24</z-m>
 		</offsets>
 	</model>
-
-
-
+	
 	<!-- LIVERY SELECT -->
 	<!-- Animation -->
 	<animation>
@@ -391,7 +382,7 @@
 		 livery_update.stop();
 		</unload>
 	</nasal>
-    
+	
 	<!-- Ground Services -->    
 	<model>
 		<name>ground_services</name>
diff --git a/Models/A320-200-IAE.xml b/Models/A320-200-IAE.xml
index bc17b952..05569058 100644
--- a/Models/A320-200-IAE.xml
+++ b/Models/A320-200-IAE.xml
@@ -344,23 +344,14 @@
 	<!-- Other non-aircraft models -->
 	<model>
 		<name>Pushback</name>
-		<path>Models/Goldhofert-autopush.xml</path>
+		<path>Aircraft/IDG-A32X/Models/Services/Pushback/Douglas.xml</path>
 		<offsets>
-			<x-m>5.55</x-m>
+			<x-m>6.0</x-m>
 			<y-m>0</y-m>
-			<z-m>-4.14</z-m>
-<!--			<x-m>7.55</x-m>
-			<y-m>0</y-m>
-			<z-m>-4.14</z-m> -->
-
+			<z-m>-4.24</z-m>
 		</offsets>
 	</model>
-        <model>
-                <path>Aircraft/Generic/marker.xml</path>
-        </model>
-
-
-
+	
 	<!-- LIVERY SELECT -->
 	<!-- Animation -->
 	<animation>
@@ -390,8 +381,8 @@
 		 livery_update.stop();
 		</unload>
 	</nasal>
-    
-    
+	
+	
 	<!-- Ground Services -->    
 	<model>
 		<name>ground_services</name>
diff --git a/Models/A320neo-CFM.xml b/Models/A320neo-CFM.xml
index 8b47fce4..4f6911f6 100644
--- a/Models/A320neo-CFM.xml
+++ b/Models/A320neo-CFM.xml
@@ -15,12 +15,11 @@
 		<z-m>1.7005004</z-m>
 	</offsets>
 
-
 	<model>
 		<name>Fuselage</name>
 		<path>Aircraft/IDG-A32X/Models/Fuselages/A320neo/fuselage.xml</path>
-	</model>		
-
+	</model>
+	
 	<!-- Separate Flightdeck to fit the modified nose -->
 	<model>
 		<name>Flightdeck</name>
@@ -325,23 +324,14 @@
 	<!-- Other non-aircraft models -->
 	<model>
 		<name>Pushback</name>
-		<path>Models/Goldhofert-autopush.xml</path>
+		<path>Aircraft/IDG-A32X/Models/Services/Pushback/Douglas.xml</path>
 		<offsets>
-			<x-m>5.55</x-m>
+			<x-m>6.0</x-m>
 			<y-m>0</y-m>
-			<z-m>-4.14</z-m>
-<!--			<x-m>7.55</x-m>
-			<y-m>0</y-m>
-			<z-m>-4.14</z-m> -->
-
+			<z-m>-4.24</z-m>
 		</offsets>
 	</model>
-        <model>
-                <path>Aircraft/Generic/marker.xml</path>
-        </model>
-
-
-
+	
 	<!-- LIVERY SELECT -->
 	<!-- Animation -->
 	<animation>
@@ -371,8 +361,8 @@
 		 livery_update.stop();
 		</unload>
 	</nasal>
-    
-    
+	
+	
 	<!-- Ground Services -->    
 	<model>
 		<name>ground_services</name>
diff --git a/Models/A320neo-PW.xml b/Models/A320neo-PW.xml
index 03f9897b..f20d9e2a 100644
--- a/Models/A320neo-PW.xml
+++ b/Models/A320neo-PW.xml
@@ -15,12 +15,11 @@
 		<z-m>1.7005004</z-m>
 	</offsets>
 
-
 	<model>
 		<name>Fuselage</name>
 		<path>Aircraft/IDG-A32X/Models/Fuselages/A320neo/fuselage.xml</path>
-	</model>		
-
+	</model>
+	
 	<!-- Separate Flightdeck to fit the modified nose -->
 	<model>
 		<name>Flightdeck</name>
@@ -325,23 +324,14 @@
 	<!-- Other non-aircraft models -->
 	<model>
 		<name>Pushback</name>
-		<path>Models/Goldhofert-autopush.xml</path>
+		<path>Aircraft/IDG-A32X/Models/Services/Pushback/Douglas.xml</path>
 		<offsets>
-			<x-m>5.55</x-m>
+			<x-m>6.0</x-m>
 			<y-m>0</y-m>
-			<z-m>-4.14</z-m>
-<!--			<x-m>7.55</x-m>
-			<y-m>0</y-m>
-			<z-m>-4.14</z-m> -->
-
+			<z-m>-4.24</z-m>
 		</offsets>
 	</model>
-        <model>
-                <path>Aircraft/Generic/marker.xml</path>
-        </model>
-
-
-
+	
 	<!-- LIVERY SELECT -->
 	<!-- Animation -->
 	<animation>
@@ -378,7 +368,7 @@
 		 livery_update.stop();
 		</unload>
 	</nasal>
-    
+	
 	<!-- Ground Services -->    
 	<model>
 		<name>ground_services</name>
diff --git a/Models/Goldhofert-autopush.xml b/Models/Goldhofert-autopush.xml
deleted file mode 100644
index 1f256db7..00000000
--- a/Models/Goldhofert-autopush.xml
+++ /dev/null
@@ -1,130 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-
-AUTOPUSH
-
-Copyright (c) 2018 Michael Danilov <mike.d.ft402 -eh- gmail.com>
-Original code (c) FlightGear
-Distribute under the terms of GPLv2.
-
--->
-<PropertyList>
-  <path>Models/Airport/Pushback/Goldhofert.ac</path>
-
-  <!-- Trucks models and artworks courtesy of XPGoodWay Team
-(http://www.xpgoodwayteam.org/site_xpushback/) -->
-
-  <model>
-    <path>Models/Airport/Pushback/Goldhofert-warning-light.xml</path>
-    <offsets>
-      <x-m>-2.908</x-m>
-      <y-m>0.260</y-m>
-      <z-m>1.326</z-m>
-      <heading-deg>0</heading-deg>
-    </offsets>
-  </model>
-
-  <model>
-    <path>Models/Airport/Pushback/Goldhofert-warning-light.xml</path>
-    <offsets>
-      <x-m>-1.781</x-m>
-      <y-m>0.260</y-m>
-      <z-m>1.326</z-m>
-      <heading-deg>90</heading-deg>
-    </offsets>
-  </model>
-
- <animation>
-   <type>spin</type>
-   <object-name>wheelfl</object-name>
-   <object-name>wheelfr</object-name>
-   <!-- SETTING The aircraft's front wheel rollspeed in m/s. -->
-   <property>gear/gear[0]/rollspeed-ms</property>
-   <factor>-16.3</factor>
-   <center>
-     <x-m>-2.8976</x-m>
-     <y-m>0</y-m>
-     <z-m>0.5809</z-m>
-   </center>
-   <axis>
-     <x>0</x>
-     <y>1</y>
-     <z>0</z>
-   </axis>
- </animation>
-
- <animation>
-   <type>spin</type>
-   <object-name>wheelrl</object-name>
-   <object-name>wheelrr</object-name>
-   <!-- SETTING The aircraft's front wheel rollspeed in m/s. -->
-   <property>gear/gear[0]/rollspeed-ms</property>
-   <factor>-16.3</factor>
-   <center>
-     <x-m>2.0501</x-m>
-     <y-m>0</y-m>
-     <z-m>0.5735</z-m>
-   </center>
-   <axis>
-     <x>0</x>
-     <y>1</y>
-     <z>0</z>
-   </axis>
- </animation>
-
- <animation>
-   <type>select</type>
-   <condition>
-     <!-- SETTING Whether connected. -->
-     <property>sim/model/pushback/connected</property>
-   </condition>
- </animation>
-
- <animation>
-   <type>rotate</type>
-   <!-- SETTING Normalized steering. -->
-   <property>gear/gear/steering-norm</property>
-   <!-- SETTING Max steering. -->
-   <factor>70.0</factor>
-   <center>
-     <x-m>0</x-m>
-     <y-m>0</y-m>
-     <z-m>0</z-m>
-   </center>
-   <axis>
-     <x>0</x>
-     <y>0</y>
-     <z>-1</z>
-   </axis>
- </animation>
-
- <animation>
-   <type>translate</type>
-   <!-- SETTING Gear compression. -->
-   <property>gear/gear[0]/compression-ft</property>
-   <factor>0.3048</factor>
-   <axis>
-     <x>0</x>
-     <y>0</y>
-     <z>1</z>
-   </axis>
- </animation>
-
- <animation>
-   <type>rotate</type>
-   <!-- SETTING Aircraft pitch. -->
-   <property>orientation/pitch-deg</property>
-   <!-- SETTING Average ground pitch. -->
-   <offset-deg>2.0</offset-deg>
-   <center>
-     <x-m>0</x-m>
-     <y-m>0</y-m>
-     <z-m>0</z-m>
-   </center>
-   <axis>
-     <x>0</x>
-     <y>1</y>
-     <z>0</z>
-   </axis>
- </animation>
-</PropertyList>
diff --git a/Models/Services/Pushback/Douglas.xml b/Models/Services/Pushback/Douglas.xml
index 9b7f2987..d2a9219f 100644
--- a/Models/Services/Pushback/Douglas.xml
+++ b/Models/Services/Pushback/Douglas.xml
@@ -1,198 +1,195 @@
 <?xml version="1.0"?>
+
 <PropertyList>
-  <path>Douglas.ac</path>
 
-  <!-- Trucks models and artworks courtesy of XPGoodWay Team
-(http://www.xpgoodwayteam.org/site_xpushback/) -->
+	<!-- Trucks models and artworks courtesy of XPGoodWay Team
+	(http://www.xpgoodwayteam.org/site_xpushback/) -->
+	
+	<path>Douglas.ac</path>
 
- <!-- switch to night/day textures -->
+	<!-- switch to night/day textures -->
+	<animation>
+		<type>textranslate</type>
+		<property>/sim/time/sun-angle-rad</property>
+		<step>1.60</step>
+		<factor>0.318471338</factor>
+		<center>
+			<x-m>0</x-m>
+			<y-m>0</y-m>
+			<z-m>0</z-m>
+		</center>
+		<axis>
+			<x>-1</x>
+			<y>0</y>
+			<z>0</z>
+		</axis>
+	</animation>
 
- <animation>
-   <type>textranslate</type>
-   <property>/sim/time/sun-angle-rad</property>
-   <step>1.60</step>
-   <factor>0.318471338</factor>
-   <center>
-     <x-m>0</x-m>
-     <y-m>0</y-m>
-     <z-m>0</z-m>
-   </center>
-   <axis>
-     <x>-1</x>
-     <y>0</y>
-     <z>0</z>
-   </axis>
- </animation>
+	<animation>
+		<type>material</type>
+		<condition>		
+			<greater-than>		
+				<property>/sim/time/sun-angle-rad</property>
+				<value>1.60</value>
+			</greater-than>
+		</condition>
+		<emission>	
+			<red>1</red>	
+			<green>1</green>	
+			<blue>1</blue>
+		</emission>
+	</animation>
 
- <animation>
-   <type>material</type>
-   <condition>		
-     <greater-than>		
-       <property>/sim/time/sun-angle-rad</property>
-       <value>1.60</value>
-     </greater-than>
-   </condition>
-   <emission>	
-     <red>1</red>	
-     <green>1</green>	
-     <blue>1</blue>
-   </emission>
- </animation>
+	<animation>
+		<type>material</type>
+		<condition>		
+			<less-than-equals>		
+				<property>/sim/time/sun-angle-rad</property>
+				<value>1.60</value>
+			</less-than-equals>
+		</condition>
+		<emission>	
+			<red>0</red>	
+			<green>0</green>	
+			<blue>0</blue>
+		</emission>
+	</animation>
 
- <animation>
-   <type>material</type>
-   <condition>		
-     <less-than-equals>		
-       <property>/sim/time/sun-angle-rad</property>
-       <value>1.60</value>
-     </less-than-equals>
-   </condition>
-   <emission>	
-     <red>0</red>	
-     <green>0</green>	
-     <blue>0</blue>
-   </emission>
- </animation>
+	<animation>
+		<type>select</type>
+		<condition>
+			<property>sim/model/pushback/enabled</property>
+			<property>gear/gear[0]/wow</property>
+		</condition>
+	</animation>
 
- <animation>
-   <type>select</type>
-   <condition>
-     <property>sim/model/pushback/enabled</property>
-     <property>gear/gear[0]/wow</property>
-   </condition>
- </animation>
+	<animation>
+		<type>rotate</type>
+		<property>fdm/jsbsim/fcs/pushback-steer-deg</property>
+		<factor>-1</factor>
+		<center>
+			<x-m>1.53665</x-m>
+			<y-m>0</y-m>
+			<z-m>0</z-m>
+		</center>
+		<axis>
+			<x>0</x>
+			<y>0</y>
+			<z>1</z>
+		</axis>
+	</animation>
 
- <animation>
-   <type>rotate</type>
-   <condition>
-     <greater-than>
-       <property>sim/model/pushback/position-norm</property>
-       <value>0.99</value>
-     </greater-than>
-   </condition>
-   <property>gear/gear[0]/steering-norm</property>
-   <factor>-70</factor>
-   <center>
-     <x-m>3</x-m>
-     <y-m>0</y-m>
-     <z-m>0</z-m>
-   </center>
-   <axis>
-     <x>0</x>
-     <y>0</y>
-     <z>1</z>
-   </axis>
- </animation>
+	<!-- change heading of the pushback when driving the arc -->
+	<animation>
+		<type>rotate</type>
+		<property>sim/model/pushback/position-norm</property>
+		<factor>-90</factor>
+		<offset-deg>90</offset-deg>
+		<center>
+			<x-m>0</x-m>
+			<y-m>0</y-m>
+			<z-m>0</z-m>
+		</center>
+		<axis>
+			<x>0</x>
+			<y>0</y>
+			<z>1</z>
+		</axis>
+	</animation>
 
-  <!-- change heading of the pushback when driving the arc -->
-  <animation>
-    <type>rotate</type>
-    <property>sim/model/pushback/position-norm</property>
-    <factor>-90</factor>
-    <offset-deg>90</offset-deg>
-    <center>
-      <x-m>0</x-m>
-      <y-m>0</y-m>
-      <z-m>0</z-m>
-    </center>
-    <axis>
-      <x>0</x>
-      <y>0</y>
-      <z>1</z>
-    </axis>
-  </animation>
+	<!-- compensate for gear compression -->
+	<animation>
+		<type>translate</type>
+		<property>gear/gear[0]/compression-ft</property>
+		<factor>0.3048</factor>
+		<axis>
+			<x>0</x>
+			<y>0</y>
+			<z>1</z>
+		</axis>
+	</animation>
 
-  <!-- compensate for gear compression -->
-  <animation>
-    <type>translate</type>
-    <property>gear/gear[0]/compression-ft</property>
-    <factor>0.3048</factor>
-    <axis>
-      <x>0</x>
-      <y>0</y>
-      <z>1</z>
-    </axis>
-  </animation>
-
-  <!-- precalculated sin and asin to move the pushback on a 90deg arc, 25m radius -->
-  <animation>
-    <type>translate</type>
-    <property>sim/model/pushback/position-norm</property>
-    <interpolation>
-      <entry><ind>1.000000</ind><dep>0.000000</dep></entry>
-      <entry><ind>0.950000</ind><dep>1.961477</dep></entry>
-      <entry><ind>0.900000</ind><dep>3.910862</dep></entry>
-      <entry><ind>0.850000</ind><dep>5.836134</dep></entry>
-      <entry><ind>0.800000</ind><dep>7.725425</dep></entry>
-      <entry><ind>0.750000</ind><dep>9.567086</dep></entry>
-      <entry><ind>0.700000</ind><dep>11.349763</dep></entry>
-      <entry><ind>0.650000</ind><dep>13.062464</dep></entry>
-      <entry><ind>0.600000</ind><dep>14.694631</dep></entry>
-      <entry><ind>0.550000</ind><dep>16.236201</dep></entry>
-      <entry><ind>0.500000</ind><dep>17.677670</dep></entry>
-      <entry><ind>0.450000</ind><dep>19.010149</dep></entry>
-      <entry><ind>0.400000</ind><dep>20.225425</dep></entry>
-      <entry><ind>0.350000</ind><dep>21.316004</dep></entry>
-      <entry><ind>0.300000</ind><dep>22.275163</dep></entry>
-      <entry><ind>0.250000</ind><dep>23.096988</dep></entry>
-      <entry><ind>0.200000</ind><dep>23.776413</dep></entry>
-      <entry><ind>0.150000</ind><dep>24.309248</dep></entry>
-      <entry><ind>0.100000</ind><dep>24.692209</dep></entry>
-      <entry><ind>0.050000</ind><dep>24.922933</dep></entry>
-      <entry><ind>0.000000</ind><dep>25.000000</dep></entry>
-    </interpolation>
-    <axis>
-      <x>-1</x>
-      <y>0</y>
-      <z>0</z>
-    </axis>
-  </animation>
-    <animation>
-     <type>translate</type>
-     <property>sim/model/pushback/position-norm</property>
-     <interpolation>
-     <entry><ind>1.000000</ind><dep>0.000000</dep></entry>
-     <entry><ind>0.950000</ind><dep>0.077067</dep></entry>
-     <entry><ind>0.900000</ind><dep>0.307791</dep></entry>
-     <entry><ind>0.850000</ind><dep>0.690752</dep></entry>
-     <entry><ind>0.800000</ind><dep>1.223587</dep></entry>
-     <entry><ind>0.750000</ind><dep>1.903012</dep></entry>
-     <entry><ind>0.700000</ind><dep>2.724837</dep></entry>
-     <entry><ind>0.650000</ind><dep>3.683996</dep></entry>
-     <entry><ind>0.600000</ind><dep>4.774575</dep></entry>
-     <entry><ind>0.550000</ind><dep>5.989851</dep></entry>
-     <entry><ind>0.500000</ind><dep>7.322330</dep></entry>
-     <entry><ind>0.450000</ind><dep>8.763799</dep></entry>
-     <entry><ind>0.400000</ind><dep>10.305369</dep></entry>
-     <entry><ind>0.350000</ind><dep>11.937536</dep></entry>
-     <entry><ind>0.300000</ind><dep>13.650238</dep></entry>
-     <entry><ind>0.250000</ind><dep>15.432914</dep></entry>
-     <entry><ind>0.200000</ind><dep>17.274575</dep></entry>
-     <entry><ind>0.150000</ind><dep>19.163866</dep></entry>
-     <entry><ind>0.100000</ind><dep>21.089138</dep></entry>
-     <entry><ind>0.050000</ind><dep>23.038523</dep></entry>
-     <entry><ind>0.000000</ind><dep>25.000000</dep></entry>
-     </interpolation>
-     <axis>
-       <x>0</x>
-       <y>-1</y>
-       <z>0</z>
-     </axis>
-   </animation>
-    <!-- compensate for pitch of aircraft, keep pushback level -->
-   <animation>
-     <type>rotate</type>
-     <property>orientation/pitch-deg</property>
-     <factor>-1</factor>
-     <center>
-       <x-m>0</x-m>
-       <y-m>0</y-m>
-       <z-m>0</z-m>
-     </center>
-     <axis>
-       <x>0</x>
-       <y>1</y>
-       <z>0</z>
-     </axis>
-   </animation>
-  </PropertyList>
+	<!-- precalculated sin and asin to move the pushback on a 90deg arc, 25m radius -->
+	<animation>
+		<type>translate</type>
+		<property>sim/model/pushback/position-norm</property>
+		<interpolation>
+			<entry><ind>1.000000</ind><dep>0.000000</dep></entry>
+			<entry><ind>0.950000</ind><dep>1.961477</dep></entry>
+			<entry><ind>0.900000</ind><dep>3.910862</dep></entry>
+			<entry><ind>0.850000</ind><dep>5.836134</dep></entry>
+			<entry><ind>0.800000</ind><dep>7.725425</dep></entry>
+			<entry><ind>0.750000</ind><dep>9.567086</dep></entry>
+			<entry><ind>0.700000</ind><dep>11.349763</dep></entry>
+			<entry><ind>0.650000</ind><dep>13.062464</dep></entry>
+			<entry><ind>0.600000</ind><dep>14.694631</dep></entry>
+			<entry><ind>0.550000</ind><dep>16.236201</dep></entry>
+			<entry><ind>0.500000</ind><dep>17.677670</dep></entry>
+			<entry><ind>0.450000</ind><dep>19.010149</dep></entry>
+			<entry><ind>0.400000</ind><dep>20.225425</dep></entry>
+			<entry><ind>0.350000</ind><dep>21.316004</dep></entry>
+			<entry><ind>0.300000</ind><dep>22.275163</dep></entry>
+			<entry><ind>0.250000</ind><dep>23.096988</dep></entry>
+			<entry><ind>0.200000</ind><dep>23.776413</dep></entry>
+			<entry><ind>0.150000</ind><dep>24.309248</dep></entry>
+			<entry><ind>0.100000</ind><dep>24.692209</dep></entry>
+			<entry><ind>0.050000</ind><dep>24.922933</dep></entry>
+			<entry><ind>0.000000</ind><dep>25.000000</dep></entry>
+		</interpolation>
+		<axis>
+			<x>-1</x>
+			<y>0</y>
+			<z>0</z>
+		</axis>
+	</animation>
+	
+	<animation>
+		<type>translate</type>
+		<property>sim/model/pushback/position-norm</property>
+		<interpolation>
+			<entry><ind>1.000000</ind><dep>0.000000</dep></entry>
+			<entry><ind>0.950000</ind><dep>0.077067</dep></entry>
+			<entry><ind>0.900000</ind><dep>0.307791</dep></entry>
+			<entry><ind>0.850000</ind><dep>0.690752</dep></entry>
+			<entry><ind>0.800000</ind><dep>1.223587</dep></entry>
+			<entry><ind>0.750000</ind><dep>1.903012</dep></entry>
+			<entry><ind>0.700000</ind><dep>2.724837</dep></entry>
+			<entry><ind>0.650000</ind><dep>3.683996</dep></entry>
+			<entry><ind>0.600000</ind><dep>4.774575</dep></entry>
+			<entry><ind>0.550000</ind><dep>5.989851</dep></entry>
+			<entry><ind>0.500000</ind><dep>7.322330</dep></entry>
+			<entry><ind>0.450000</ind><dep>8.763799</dep></entry>
+			<entry><ind>0.400000</ind><dep>10.305369</dep></entry>
+			<entry><ind>0.350000</ind><dep>11.937536</dep></entry>
+			<entry><ind>0.300000</ind><dep>13.650238</dep></entry>
+			<entry><ind>0.250000</ind><dep>15.432914</dep></entry>
+			<entry><ind>0.200000</ind><dep>17.274575</dep></entry>
+			<entry><ind>0.150000</ind><dep>19.163866</dep></entry>
+			<entry><ind>0.100000</ind><dep>21.089138</dep></entry>
+			<entry><ind>0.050000</ind><dep>23.038523</dep></entry>
+			<entry><ind>0.000000</ind><dep>25.000000</dep></entry>
+		</interpolation>
+		<axis>
+			<x>0</x>
+			<y>-1</y>
+			<z>0</z>
+		</axis>
+	</animation>
+	
+	<!-- compensate for pitch of aircraft, keep pushback level -->
+	<animation>
+		<type>rotate</type>
+		<property>orientation/pitch-deg</property>
+		<factor>-1</factor>
+		<center>
+			<x-m>0</x-m>
+			<y-m>0</y-m>
+			<z-m>0</z-m>
+		</center>
+		<axis>
+			<x>0</x>
+			<y>1</y>
+			<z>0</z>
+		</axis>
+	</animation>
+</PropertyList>
diff --git a/Systems/a320-fcs.xml b/Systems/a320-fcs.xml
index 28a69dbf..837b49e7 100644
--- a/Systems/a320-fcs.xml
+++ b/Systems/a320-fcs.xml
@@ -1919,6 +1919,13 @@
 			<rate_limit>70</rate_limit>
 			<output>fcs/steer-pos-deg[0]</output>
 		</actuator>
+		
+		<switch name="fcs/pushback-steer-deg">
+			<default value="0"/>
+			<test value="fcs/steer-deg">
+				/sim/model/pushback/position-norm gt 0.999
+			</test>
+		</switch>
 	
 	</channel>
 	
diff --git a/revision.txt b/revision.txt
index a06e235b..2ddf42af 100644
--- a/revision.txt
+++ b/revision.txt
@@ -1 +1 @@
-4510
\ No newline at end of file
+4511
\ No newline at end of file