diff --git a/src/blackcore/context/contextsimulator.h b/src/blackcore/context/contextsimulator.h
index a19c56f5c..95539b710 100644
--- a/src/blackcore/context/contextsimulator.h
+++ b/src/blackcore/context/contextsimulator.h
@@ -94,7 +94,10 @@ namespace BlackCore
             //! Simulator plugin loaded / unloaded (default info)
             void simulatorPluginChanged(const BlackMisc::Simulation::CSimulatorPluginInfo &info);
 
-            //! A formerly vital driver is no loner vital
+            //! Same as simulatorPluginChanged, only with simulator signature
+            void simulatorChanged(const BlackMisc::Simulation::CSimulatorInfo &simulator);
+
+            //! A formerly vital driver is no longer vital/responding
             void vitalityLost();
 
             //! Render restrictions have been changed
@@ -133,6 +136,11 @@ namespace BlackCore
             //! Request a console message (whatever the console maybe)
             void requestUiConsoleMessage(const QString &driverMessage, bool clear);
 
+            //! Validate model set
+            void validatedModelSet(const BlackMisc::Simulation::CSimulatorInfo &simulator,
+                                   const BlackMisc::Simulation::CAircraftModelList &valid, const BlackMisc::Simulation::CAircraftModelList &invalid,
+                                   bool stopped, const BlackMisc::CStatusMessageList &msgs);
+
         public slots:
             //! Simulator info, currently loaded plugin
             virtual BlackMisc::Simulation::CSimulatorPluginInfo getSimulatorPluginInfo() const = 0;
diff --git a/src/blackcore/context/contextsimulatorimpl.cpp b/src/blackcore/context/contextsimulatorimpl.cpp
index 3f7d941f0..dc266f0d4 100644
--- a/src/blackcore/context/contextsimulatorimpl.cpp
+++ b/src/blackcore/context/contextsimulatorimpl.cpp
@@ -90,6 +90,15 @@ namespace BlackCore
                     this->enableMatchingMessages(true);
                 }
             });
+
+            // Validation
+            m_validator = new CBackgroundValidation(this);
+            m_validator->setCurrentSimulator(this->getSimulatorPluginInfo().getSimulator());
+            connect(this, &CContextSimulator::simulatorChanged, m_validator, &CBackgroundValidation::setCurrentSimulator);
+            connect(m_validator, &CBackgroundValidation::validated, this, &CContextSimulator::validatedModelSet, Qt::QueuedConnection);
+
+            m_validator->start(QThread::LowestPriority);
+            m_validator->startUpdating(60);
         }
 
         CContextSimulator *CContextSimulator::registerWithDBus(CDBusServer *server)
@@ -106,6 +115,11 @@ namespace BlackCore
 
         void CContextSimulator::gracefulShutdown()
         {
+            if (m_validator)
+            {
+                disconnect(m_validator);
+                m_validator->abandonAndWait();
+            }
             this->disconnect();
             this->unloadSimulatorPlugin();
         }
@@ -343,8 +357,8 @@ namespace BlackCore
 
         bool CContextSimulator::loadSimulatorPlugin(const CSimulatorPluginInfo &simulatorPluginInfo)
         {
-            Q_ASSERT(getIContextApplication());
-            Q_ASSERT(getIContextApplication()->isUsingImplementingObject());
+            Q_ASSERT(this->getIContextApplication());
+            Q_ASSERT(this->getIContextApplication()->isUsingImplementingObject());
             Q_ASSERT(!simulatorPluginInfo.isUnspecified());
             Q_ASSERT(CThreadUtils::isCurrentThreadApplicationThread()); // only run in main thread
 
@@ -437,7 +451,12 @@ namespace BlackCore
             QTimer::singleShot(0, this, [ = ]
             {
                 if (!myself) { return; }
-                emit this->simulatorPluginChanged(simulatorPluginInfo);
+                if (m_simulatorPlugin.second)
+                {
+                    // use the real driver as this will also work eith emulated driver
+                    emit this->simulatorPluginChanged(m_simulatorPlugin.second->getSimulatorPluginInfo());
+                    emit this->simulatorChanged(m_simulatorPlugin.second->getSimulatorInfo());
+                }
             });
 
             CLogMessage(this).info(u"Simulator plugin loaded: '%1' connected: %2")
@@ -527,6 +546,7 @@ namespace BlackCore
                     simulator->unload();
                     simulator->deleteLater();
                     emit this->simulatorPluginChanged(CSimulatorPluginInfo());
+                    emit this->simulatorChanged(CSimulatorInfo());
                 }
 
                 if (m_wasSimulating) { emit this->vitalityLost(); }
@@ -564,8 +584,8 @@ namespace BlackCore
                 CSimulatedAircraft brokenAircraft(aircraftAfterModelApplied);
                 brokenAircraft.setEnabled(false);
                 brokenAircraft.setRendered(false);
-                emit this->aircraftRenderingChanged(brokenAircraft);
                 CMatchingUtils::addLogDetailsToList(pMatchingMessages, callsign, QStringLiteral("Cannot add remote aircraft, no model string: '%1'").arg(brokenAircraft.toQString()));
+                emit this->aircraftRenderingChanged(brokenAircraft);
                 return;
             }
             m_simulatorPlugin.second->logicallyAddRemoteAircraft(aircraftAfterModelApplied);
diff --git a/src/blackcore/context/contextsimulatorimpl.h b/src/blackcore/context/contextsimulatorimpl.h
index ce6450370..354311d30 100644
--- a/src/blackcore/context/contextsimulatorimpl.h
+++ b/src/blackcore/context/contextsimulatorimpl.h
@@ -24,6 +24,7 @@
 #include "blackmisc/simulation/settings/modelmatchersettings.h"
 #include "blackmisc/simulation/settings/simulatorsettings.h"
 #include "blackmisc/simulation/settings/interpolationrenderingsetupsettings.h"
+#include "blackmisc/simulation/backgroundvalidation.h"
 #include "blackmisc/simulation/aircraftmodellist.h"
 #include "blackmisc/simulation/interpolationsetuplist.h"
 #include "blackmisc/simulation/remoteaircraftprovider.h"
@@ -262,6 +263,7 @@ namespace BlackCore
             bool m_isWeatherActivated     = false;
 
             QString m_networkSessionId; //!< Network session of CServer::getServerSessionId, if not connected empty (for statistics, ..)
+            BlackMisc::Simulation::CBackgroundValidation *m_validator = nullptr;
 
             // settings
             BlackMisc::CSettingReadOnly<Application::TEnabledSimulators>           m_enabledSimulators { this, &CContextSimulator::changeEnabledSimulators };
diff --git a/src/blackcore/context/contextsimulatorproxy.cpp b/src/blackcore/context/contextsimulatorproxy.cpp
index ed9994afe..d886a4fa9 100644
--- a/src/blackcore/context/contextsimulatorproxy.cpp
+++ b/src/blackcore/context/contextsimulatorproxy.cpp
@@ -71,6 +71,9 @@ namespace BlackCore
             s = connection.connect(serviceName, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName(),
                                    "simulatorPluginChanged", this, SIGNAL(simulatorPluginChanged(BlackMisc::Simulation::CSimulatorPluginInfo)));
             Q_ASSERT(s);
+            s = connection.connect(serviceName, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName(),
+                                   "simulatorChanged", this, SIGNAL(simulatorChanged(BlackMisc::Simulation::CSimulatorInfo)));
+            Q_ASSERT(s);
             s = connection.connect(serviceName, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName(),
                                    "vitalityLost", this, SIGNAL(vitalityLost()));
             Q_ASSERT(s);
@@ -90,6 +93,9 @@ namespace BlackCore
             s = connection.connect(serviceName, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName(),
                                    "requestUiConsoleMessage", this, SIGNAL(requestUiConsoleMessage(QString, bool)));
             Q_ASSERT(s);
+            s = connection.connect(serviceName, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName(),
+                                   "validatedModelSet", this, SIGNAL(validatedModelSet(BlackMisc::Simulation::CSimulatorInfo, BlackMisc::Simulation::CAircraftModelList, BlackMisc::Simulation::CAircraftModelList, bool, BlackMisc::CStatusMessageList)));
+            Q_ASSERT(s);
             Q_UNUSED(s);
             this->relayBaseClassSignals(serviceName, connection, IContextSimulator::ObjectPath(), IContextSimulator::InterfaceName());
         }
@@ -323,5 +329,6 @@ namespace BlackCore
         {
             return m_dBusInterface->callDBusRet<CStatusMessageList>(QLatin1String("copyFsxTerrainProbe"), simulator);
         }
+
     } // namespace
 } // namespace