diff --git a/Models/Instruments/MCDU1/INITA/INITA.xml b/Models/Instruments/MCDU1/INITA/INITA.xml
index f4abd1f1..57c5ef0f 100644
--- a/Models/Instruments/MCDU1/INITA/INITA.xml
+++ b/Models/Instruments/MCDU1/INITA/INITA.xml
@@ -804,6 +804,30 @@
 		<draw-text type="bool">true</draw-text>
 		<draw-alignment type="bool">false</draw-alignment>
 		<draw-boundingbox type="bool">false</draw-boundingbox>
+		<character-size>0.0040</character-size>
+		<font-resolution>
+			<width type="int">64</width>
+			<height type="int">64</height>
+		</font-resolution>
+	</text>
+	
+	<text>
+		<name>tropovalue2</name>
+		<offsets>
+			<x-m>-0.001</x-m>
+			<y-m>0.043</y-m>
+			<z-m>0.0190</z-m>
+		</offsets>
+		<alignment>right-center</alignment>
+		<axis-alignment>yz-plane</axis-alignment>
+		<type type="string">text-value</type>
+		<property type="string">FMGC/internal/tropo</property>
+		<truncate type="bool">false</truncate>
+		<font type="string">BoeingCDU-Large.ttf</font>
+		<property>autopilot/serviceable</property>
+		<draw-text type="bool">true</draw-text>
+		<draw-alignment type="bool">false</draw-alignment>
+		<draw-boundingbox type="bool">false</draw-boundingbox>
 		<character-size>0.0050</character-size>
 		<font-resolution>
 			<width type="int">64</width>
@@ -811,6 +835,28 @@
 		</font-resolution>
 	</text>
 	
+	<animation>
+		<type>select</type>
+		<object-name>tropovalue</object-name>
+		<condition>
+			<equals>
+				<property>FMGC/internal/tropo-set</property>
+				<value>0</value>
+			</equals>
+		</condition>
+	</animation>
+	
+	<animation>
+		<type>select</type>
+		<object-name>tropovalue2</object-name>
+		<condition>
+			<equals>
+				<property>FMGC/internal/tropo-set</property>
+				<value>1</value>
+			</equals>
+		</condition>
+	</animation>
+	
 	<!-- Colors -->
 	<!-- White -->
     <animation>
@@ -920,6 +966,7 @@
 	<animation>
         <type>material</type>
 		<object-name>tropovalue</object-name>
+		<object-name>tropovalue2</object-name>
 		<object-name>LONG-val</object-name>
 		<object-name>LAT-val</object-name>
 		<object-name>fromto2</object-name>
diff --git a/Models/Instruments/MCDU2/INITA/INITA.xml b/Models/Instruments/MCDU2/INITA/INITA.xml
index f4abd1f1..57c5ef0f 100644
--- a/Models/Instruments/MCDU2/INITA/INITA.xml
+++ b/Models/Instruments/MCDU2/INITA/INITA.xml
@@ -804,6 +804,30 @@
 		<draw-text type="bool">true</draw-text>
 		<draw-alignment type="bool">false</draw-alignment>
 		<draw-boundingbox type="bool">false</draw-boundingbox>
+		<character-size>0.0040</character-size>
+		<font-resolution>
+			<width type="int">64</width>
+			<height type="int">64</height>
+		</font-resolution>
+	</text>
+	
+	<text>
+		<name>tropovalue2</name>
+		<offsets>
+			<x-m>-0.001</x-m>
+			<y-m>0.043</y-m>
+			<z-m>0.0190</z-m>
+		</offsets>
+		<alignment>right-center</alignment>
+		<axis-alignment>yz-plane</axis-alignment>
+		<type type="string">text-value</type>
+		<property type="string">FMGC/internal/tropo</property>
+		<truncate type="bool">false</truncate>
+		<font type="string">BoeingCDU-Large.ttf</font>
+		<property>autopilot/serviceable</property>
+		<draw-text type="bool">true</draw-text>
+		<draw-alignment type="bool">false</draw-alignment>
+		<draw-boundingbox type="bool">false</draw-boundingbox>
 		<character-size>0.0050</character-size>
 		<font-resolution>
 			<width type="int">64</width>
@@ -811,6 +835,28 @@
 		</font-resolution>
 	</text>
 	
+	<animation>
+		<type>select</type>
+		<object-name>tropovalue</object-name>
+		<condition>
+			<equals>
+				<property>FMGC/internal/tropo-set</property>
+				<value>0</value>
+			</equals>
+		</condition>
+	</animation>
+	
+	<animation>
+		<type>select</type>
+		<object-name>tropovalue2</object-name>
+		<condition>
+			<equals>
+				<property>FMGC/internal/tropo-set</property>
+				<value>1</value>
+			</equals>
+		</condition>
+	</animation>
+	
 	<!-- Colors -->
 	<!-- White -->
     <animation>
@@ -920,6 +966,7 @@
 	<animation>
         <type>material</type>
 		<object-name>tropovalue</object-name>
+		<object-name>tropovalue2</object-name>
 		<object-name>LONG-val</object-name>
 		<object-name>LAT-val</object-name>
 		<object-name>fromto2</object-name>
diff --git a/Nasal/FMGC.nas b/Nasal/FMGC.nas
index 113f53b1..13a09e95 100644
--- a/Nasal/FMGC.nas
+++ b/Nasal/FMGC.nas
@@ -111,7 +111,6 @@ setlistener("/sim/signals/fdm-initialized", func {
 var FMGCinit = func {
 	setprop("/FMGC/status/to-state", 0);
 	setprop("/FMGC/status/phase", "0"); # 0 is Preflight 1 is Takeoff 2 is Climb 3 is Cruise 4 is Descent 5 is Decel/Approach 6 is Go Around 7 is Done
-	setprop("/FMGC/internal/tropo", 36090);
 	setprop("/FMGC/internal/overspeed", 338);
 	setprop("/FMGC/internal/mng-spd", 157);
 	setprop("/FMGC/internal/mng-spd-cmd", 157);
diff --git a/Nasal/MCDU1/INITA.nas b/Nasal/MCDU1/INITA.nas
index 50e68849..57c8d523 100644
--- a/Nasal/MCDU1/INITA.nas
+++ b/Nasal/MCDU1/INITA.nas
@@ -137,5 +137,25 @@ var initInputA = func(key) {
 		if (getprop("/controls/adirs/mcducbtn") == 0) {
 			setprop("/controls/adirs/mcducbtn", 1);
 		}
+	} else if (key == "R6") {
+		if (scratchpad == "CLR") {
+			setprop("/FMGC/internal/tropo", 36090);
+			setprop("/FMGC/internal/tropo-set", 0);
+			setprop("/MCDU[0]/scratchpad-msg", "0");
+			setprop("/MCDU[0]/scratchpad", "");
+		} else {
+			var tropo = size(scratchpad);
+			if (tropo == 5) {
+				setprop("/FMGC/internal/tropo-set", 1);
+				setprop("/FMGC/internal/tropo", scratchpad);
+				setprop("/MCDU[0]/scratchpad", "");
+			} else {
+				if (getprop("/MCDU[0]/scratchpad") != "NOT ALLOWED") {
+					setprop("/MCDU[0]/last-scratchpad", getprop("/MCDU[0]/scratchpad"));
+				}
+				setprop("/MCDU[0]/scratchpad-msg", "1");
+				setprop("/MCDU[0]/scratchpad", "NOT ALLOWED");
+			}
+		}
 	}
 }
diff --git a/Nasal/MCDU1/MCDU.nas b/Nasal/MCDU1/MCDU.nas
index f6c0b03c..a1f181af 100644
--- a/Nasal/MCDU1/MCDU.nas
+++ b/Nasal/MCDU1/MCDU.nas
@@ -71,6 +71,8 @@ var MCDU_reset = func {
 	setprop("/FMGC/print/mcdu/page2/R2req", 0);
 	setprop("/FMGC/print/mcdu/page2/R3req", 0);
 	setprop("/FMGC/print/mcdu/page2/R4req", 0);
+	setprop("/FMGC/internal/tropo", 36090);
+	setprop("/FMGC/internal/tropo-set", 0);
 }
 
 var lskbutton = func(btn) {
@@ -303,6 +305,8 @@ var rskbutton = func(btn) {
 			}
 			setprop("/MCDU[0]/scratchpad-msg", "1");
 			setprop("/MCDU[0]/scratchpad", "AOC DISABLED");
+		} else if (getprop("/MCDU[0]/page") == "INITA") {
+			initInputA("R6");
 		} else {
 			if (getprop("/MCDU[0]/scratchpad") != "NOT ALLOWED") {
 				setprop("/MCDU[0]/last-scratchpad", getprop("/MCDU[0]/scratchpad"));
diff --git a/Nasal/MCDU2/INITA.nas b/Nasal/MCDU2/INITA.nas
index c58ed54c..3c059a50 100644
--- a/Nasal/MCDU2/INITA.nas
+++ b/Nasal/MCDU2/INITA.nas
@@ -137,5 +137,26 @@ var initInputA = func(key) {
 		if (getprop("/controls/adirs/mcducbtn") == 0) {
 			setprop("/controls/adirs/mcducbtn", 1);
 		}
+	} else if (key == "R6") {
+		if (scratchpad == "CLR") {
+			setprop("/FMGC/internal/tropo", 36090);
+			setprop("/FMGC/internal/tropo-set", 0);
+			setprop("/MCDU[0]/scratchpad-msg", "0");
+			setprop("/MCDU[0]/scratchpad", "");
+		} else {
+			var tropo = size(scratchpad);
+			if (tropo == 5) {
+				setprop("/FMGC/internal/tropo-set", 1);
+				setprop("/FMGC/internal/tropo", scratchpad);
+				setprop("/MCDU[0]/scratchpad", "");
+			} else {
+				if (getprop("/MCDU[0]/scratchpad") != "NOT ALLOWED") {
+					setprop("/MCDU[0]/last-scratchpad", getprop("/MCDU[0]/scratchpad"));
+				}
+				setprop("/MCDU[0]/scratchpad-msg", "1");
+				setprop("/MCDU[0]/scratchpad", "NOT ALLOWED");
+			}
+		}
 	}
+	
 }
diff --git a/Nasal/MCDU2/MCDU.nas b/Nasal/MCDU2/MCDU.nas
index bfc3d5c4..e5c81ff9 100644
--- a/Nasal/MCDU2/MCDU.nas
+++ b/Nasal/MCDU2/MCDU.nas
@@ -71,6 +71,8 @@ var MCDU_reset = func {
 	setprop("/FMGC/print/mcdu/page2/R2req", 0);
 	setprop("/FMGC/print/mcdu/page2/R3req", 0);
 	setprop("/FMGC/print/mcdu/page2/R4req", 0);
+	setprop("/FMGC/internal/tropo", 36090);
+	setprop("/FMGC/internal/tropo-set", 0);
 }
 
 var lskbutton = func(btn) {
@@ -301,6 +303,8 @@ var rskbutton = func(btn) {
 			perfCLBInput("R6");
 		} else if (getprop("/MCDU[1]/page") == "CRZ") {
 			perfCRZInput("R6");
+		} else if (getprop("/MCDU[1]/page") == "INITA") {
+			initInputA("R6");
 		} else {
 			if (getprop("/MCDU[1]/scratchpad") != "NOT ALLOWED") {
 				setprop("/MCDU[1]/last-scratchpad", getprop("/MCDU[1]/scratchpad"));