diff --git a/src/plugins/simulator/fsxcommon/simconnectobject.cpp b/src/plugins/simulator/fsxcommon/simconnectobject.cpp
index 893a6d006..90acd3ec1 100644
--- a/src/plugins/simulator/fsxcommon/simconnectobject.cpp
+++ b/src/plugins/simulator/fsxcommon/simconnectobject.cpp
@@ -286,7 +286,8 @@ namespace BlackSimPlugin
 
         CCallsignSet CSimConnectObjects::getAllCallsigns(bool withoutProbes) const
         {
-            if (!withoutProbes) { return CCallsignSet(this->keys()); }
+            if (this->isEmpty()) { return CCallsignSet(); }
+            if (!withoutProbes)  { return CCallsignSet(this->keys()); }
             CCallsignSet callsigns;
             for (const CSimConnectObject &simObject : this->values())
             {
diff --git a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
index 44118b556..27abe9a31 100644
--- a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
+++ b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.cpp
@@ -65,12 +65,12 @@ namespace BlackSimPlugin
             Q_ASSERT_X(remoteAircraftProvider, Q_FUNC_INFO, "Missing provider");
             Q_ASSERT_X(sApp, Q_FUNC_INFO, "Missing global object");
 
-            m_addPendingSimObjTimer.setInterval(AddPendingAircraftIntervalMs);
+            m_simObjectTimer.setInterval(AddPendingAircraftIntervalMs);
             m_useFsuipc = false;
             // default model will be set in derived class
 
             CSimulatorFsxCommon::registerHelp();
-            connect(&m_addPendingSimObjTimer, &QTimer::timeout, this, &CSimulatorFsxCommon::addPendingAircraftByTimer);
+            connect(&m_simObjectTimer, &QTimer::timeout, this, &CSimulatorFsxCommon::timerBasedObjectAddOrRemove);
         }
 
         CSimulatorFsxCommon::~CSimulatorFsxCommon()
@@ -990,9 +990,10 @@ namespace BlackSimPlugin
             }
         }
 
-        void CSimulatorFsxCommon::addPendingAircraftByTimer()
+        void CSimulatorFsxCommon::timerBasedObjectAddOrRemove()
         {
             this->addPendingAircraft(AddByTimer);
+            this->physicallyRemoveAircraftNotInProvider();
         }
 
         void CSimulatorFsxCommon::addPendingAircraftAfterAdded()
@@ -1281,7 +1282,7 @@ namespace BlackSimPlugin
             Q_ASSERT_X(newRemoteAircraft.hasModelString(), Q_FUNC_INFO, "missing model string");
 
             // reset timer
-            m_addPendingSimObjTimer.start(AddPendingAircraftIntervalMs); // restart
+            m_simObjectTimer.start(AddPendingAircraftIntervalMs); // restart
 
             const CSimConnectObjects outdatedAdded = m_simConnectObjects.removeOutdatedPendingAdded(CSimConnectObject::AllTypes);
             if (!outdatedAdded.isEmpty())
@@ -1526,12 +1527,7 @@ namespace BlackSimPlugin
             }
 
             // cleanup function, actually this should not be needed
-            const QPointer<CSimulatorFsxCommon> myself(this);
-            QTimer::singleShot(100, this, [ = ]
-            {
-                if (!myself) { return; }
-                CSimulatorFsxCommon::physicallyRemoveAircraftNotInProvider();
-            });
+            this->physicallyRemoveAircraftNotInProviderAsync();
 
             // bye
             return true;
@@ -2130,6 +2126,7 @@ namespace BlackSimPlugin
 
         CCallsignSet CSimulatorFsxCommon::getCallsignsMissingInProvider() const
         {
+            if (m_simConnectObjects.isEmpty()) { return CCallsignSet(); }
             const CCallsignSet simObjectCallsigns(m_simConnectObjects.getAllCallsigns(true));
             const CCallsignSet providerCallsigns(this->getAircraftInRangeCallsigns());
             return simObjectCallsigns.difference(providerCallsigns);
@@ -2312,6 +2309,16 @@ namespace BlackSimPlugin
             return callsignsToBeRemoved;
         }
 
+        void CSimulatorFsxCommon::physicallyRemoveAircraftNotInProviderAsync()
+        {
+            const QPointer<CSimulatorFsxCommon> myself(this);
+            QTimer::singleShot(100, this, [ = ]
+            {
+                if (!myself || !sApp || sApp->isShuttingDown()) { return; }
+                CSimulatorFsxCommon::physicallyRemoveAircraftNotInProvider();
+            });
+        }
+
         CSimulatorFsxCommonListener::CSimulatorFsxCommonListener(const CSimulatorPluginInfo &info) :
             ISimulatorListener(info)
         {
diff --git a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.h b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.h
index 3903df10f..94fb7a3f2 100644
--- a/src/plugins/simulator/fsxcommon/simulatorfsxcommon.h
+++ b/src/plugins/simulator/fsxcommon/simulatorfsxcommon.h
@@ -294,9 +294,12 @@ namespace BlackSimPlugin
             int physicallyInitAITerrainProbes(const BlackMisc::Geo::ICoordinateGeodetic &coordinate, int number);
 
             //! Remove aircraft no longer in provider
-            //! \remark kind of cleanup function, in an ideal this should never need to cleanup something
+            //! \remark kind of cleanup function, in an ideal scenario this should never need to cleanup something
             BlackMisc::Aviation::CCallsignSet physicallyRemoveAircraftNotInProvider();
 
+            //! ASynchronous version of physicallyRemoveAircraftNotInProvider
+            void physicallyRemoveAircraftNotInProviderAsync();
+
             //! Verify that an object has been added in simulator
             //! \remark checks if the object was really added after an "add request" and not directly removed again
             //! \remark requests further data on remote aircraft (lights, ..) when correctly added
@@ -315,7 +318,7 @@ namespace BlackSimPlugin
             void verifyAddedTerrainProbe(const BlackMisc::Simulation::CSimulatedAircraft &remoteAircraftIn);
 
             //! Add next aircraft based on timer
-            void addPendingAircraftByTimer();
+            void timerBasedObjectAddOrRemove();
 
             //! Add next aircraft after another has been confirmed
             void addPendingAircraftAfterAdded();
@@ -549,7 +552,7 @@ namespace BlackSimPlugin
             CSimConnectObjects m_addPendingAircraft; //!< aircraft/probes awaiting to be added;
             SIMCONNECT_DATA_REQUEST_ID m_requestIdSimObjAircraft     = static_cast<SIMCONNECT_DATA_REQUEST_ID>(RequestSimObjAircraftStart);     //!< request id, use obtainRequestIdForSimObjAircraft to get id
             SIMCONNECT_DATA_REQUEST_ID m_requestIdSimObjTerrainProbe = static_cast<SIMCONNECT_DATA_REQUEST_ID>(RequestSimObjTerrainProbeStart); //!< request id, use obtainRequestIdForSimObjTerrainProbe to get id
-            QTimer m_addPendingSimObjTimer; //!< updating of SimObjects awaiting to be added
+            QTimer m_simObjectTimer; //!< updating of SimObjects awaiting to be added
 
             //! Request id to string
             static QString requestIdToString(DWORD requestId);