diff --git a/src/blackgui/components/aircraftmodelsetvalidationdialog.cpp b/src/blackgui/components/aircraftmodelsetvalidationdialog.cpp
index 28fda83c9..56cba2a1b 100644
--- a/src/blackgui/components/aircraftmodelsetvalidationdialog.cpp
+++ b/src/blackgui/components/aircraftmodelsetvalidationdialog.cpp
@@ -7,6 +7,7 @@
  */
 
 #include "aircraftmodelsetvalidationdialog.h"
+#include "guiapplication.h"
 #include "blackmisc/simulation/simulatorinfo.h"
 #include "ui_aircraftmodelsetvalidationdialog.h"
 
@@ -22,7 +23,7 @@ namespace BlackGui
             ui(new Ui::CAircraftModelSetValidationDialog)
         {
             ui->setupUi(this);
-            this->setWindowFlags(this->windowFlags() & ~Qt::WindowContextHelpButtonHint);
+            this->setWindowFlags(this->windowFlags() | Qt::WindowContextHelpButtonHint);
         }
 
         CAircraftModelSetValidationDialog::~CAircraftModelSetValidationDialog()
@@ -33,5 +34,11 @@ namespace BlackGui
             ui->comp_AircraftModelValidation->validatedModelSet(simulator, valid, invalid, stopped, msgs);
             this->setWindowTitle(QStringLiteral("Model validation for '%1'").arg(simulator.toQString(true)));
         }
+
+        bool CAircraftModelSetValidationDialog::event(QEvent *event)
+        {
+            if (CGuiApplication::triggerShowHelp(this, event)) { return true; }
+            return QDialog::event(event);
+        }
     } // ns
 } // ns
diff --git a/src/blackgui/components/aircraftmodelsetvalidationdialog.h b/src/blackgui/components/aircraftmodelsetvalidationdialog.h
index d59e6c06b..016623537 100644
--- a/src/blackgui/components/aircraftmodelsetvalidationdialog.h
+++ b/src/blackgui/components/aircraftmodelsetvalidationdialog.h
@@ -43,11 +43,15 @@ namespace BlackGui
             explicit CAircraftModelSetValidationDialog(QWidget *parent = nullptr);
 
             //! Destructor
-            virtual ~CAircraftModelSetValidationDialog();
+            virtual ~CAircraftModelSetValidationDialog() override;
 
             //! \copydoc CAircraftModelValidationComponent::validatedModelSet
             void validatedModelSet(const BlackMisc::Simulation::CSimulatorInfo &simulator, const BlackMisc::Simulation::CAircraftModelList &valid, const BlackMisc::Simulation::CAircraftModelList &invalid, bool stopped, const BlackMisc::CStatusMessageList &msgs);
 
+        protected:
+            //! \copydoc QObject::event
+            virtual bool event(QEvent *event) override;
+
         private:
             QScopedPointer<Ui::CAircraftModelSetValidationDialog> ui;
         };
diff --git a/src/blackgui/components/aircraftmodelvalidationcomponent.cpp b/src/blackgui/components/aircraftmodelvalidationcomponent.cpp
index cec9e47f4..6477d33ae 100644
--- a/src/blackgui/components/aircraftmodelvalidationcomponent.cpp
+++ b/src/blackgui/components/aircraftmodelvalidationcomponent.cpp
@@ -37,6 +37,7 @@ namespace BlackGui
             connect(ui->pb_TempDisableInvalid,  &QPushButton::released, this, &CAircraftModelValidationComponent::onButtonClicked);
             connect(ui->pb_TempDisableSelected, &QPushButton::released, this, &CAircraftModelValidationComponent::onButtonClicked);
             connect(ui->pb_TriggerValidation,   &QPushButton::released, this, &CAircraftModelValidationComponent::triggerValidation);
+            connect(ui->pb_help,                &QPushButton::released, this, &CAircraftModelValidationComponent::showHelp);
 
             // 1st init when running in distributed environment
             QPointer<CAircraftModelValidationComponent> myself(this);
@@ -148,6 +149,12 @@ namespace BlackGui
             }
         }
 
+        void CAircraftModelValidationComponent::showHelp()
+        {
+            if (!sGui || sGui->isShuttingDown()) { return; }
+            sGui->showHelp(this);
+        }
+
         void CAircraftModelValidationComponent::saveInvalidModels(const CAircraftModelList &models) const
         {
             const CStatusMessage m = models.saveInvalidModels();
diff --git a/src/blackgui/components/aircraftmodelvalidationcomponent.h b/src/blackgui/components/aircraftmodelvalidationcomponent.h
index 8d7921a7c..c3c5e9bd8 100644
--- a/src/blackgui/components/aircraftmodelvalidationcomponent.h
+++ b/src/blackgui/components/aircraftmodelvalidationcomponent.h
@@ -71,6 +71,9 @@ namespace BlackGui
             //! Button has been clicked
             void onButtonClicked();
 
+            //! Show help
+            void showHelp();
+
             //! Save invalid models
             void saveInvalidModels(const BlackMisc::Simulation::CAircraftModelList &models) const;
         };
diff --git a/src/blackgui/components/aircraftmodelvalidationcomponent.ui b/src/blackgui/components/aircraftmodelvalidationcomponent.ui
index bf9495a00..8d1b02c00 100644
--- a/src/blackgui/components/aircraftmodelvalidationcomponent.ui
+++ b/src/blackgui/components/aircraftmodelvalidationcomponent.ui
@@ -2,6 +2,14 @@
 <ui version="4.0">
  <class>CAircraftModelValidationComponent</class>
  <widget class="QFrame" name="CAircraftModelValidationComponent">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>552</width>
+    <height>298</height>
+   </rect>
+  </property>
   <property name="windowTitle">
    <string>Model validation</string>
   </property>
@@ -57,6 +65,13 @@
    <item>
     <widget class="QWidget" name="wi_Buttons" native="true">
      <layout class="QGridLayout" name="gridLayout">
+      <item row="0" column="4">
+       <widget class="QPushButton" name="pb_TempDisableInvalid">
+        <property name="text">
+         <string>temp.disable invalid</string>
+        </property>
+       </widget>
+      </item>
       <item row="0" column="1">
        <widget class="BlackGui::Components::CSimulatorSelector" name="comp_Simulator">
         <property name="minimumSize">
@@ -80,7 +95,7 @@
         </property>
        </widget>
       </item>
-      <item row="0" column="4">
+      <item row="0" column="5">
        <widget class="QPushButton" name="pb_TempDisableSelected">
         <property name="text">
          <string>temp.disable selected</string>
@@ -88,16 +103,16 @@
        </widget>
       </item>
       <item row="0" column="3">
-       <widget class="QPushButton" name="pb_TempDisableInvalid">
+       <widget class="QPushButton" name="pb_TriggerValidation">
         <property name="text">
-         <string>temp.disable invalid</string>
+         <string>trigger validation</string>
         </property>
        </widget>
       </item>
       <item row="0" column="2">
-       <widget class="QPushButton" name="pb_TriggerValidation">
+       <widget class="QPushButton" name="pb_help">
         <property name="text">
-         <string>trigger validation</string>
+         <string>help</string>
         </property>
        </widget>
       </item>
@@ -129,6 +144,7 @@
   <tabstop>tw_CAircraftModelValidationComponent</tabstop>
   <tabstop>tvp_InvalidModels</tabstop>
   <tabstop>cb_EnableStartupCheck</tabstop>
+  <tabstop>pb_help</tabstop>
   <tabstop>pb_TriggerValidation</tabstop>
   <tabstop>pb_TempDisableInvalid</tabstop>
   <tabstop>pb_TempDisableSelected</tabstop>