diff --git a/src/plugins/simulator/xplane/simulatorxplane.cpp b/src/plugins/simulator/xplane/simulatorxplane.cpp
index 5ade94298..f604431b6 100644
--- a/src/plugins/simulator/xplane/simulatorxplane.cpp
+++ b/src/plugins/simulator/xplane/simulatorxplane.cpp
@@ -478,13 +478,14 @@ namespace BlackSimPlugin
         {
             Q_ASSERT(isConnected());
             using namespace BlackMisc::PhysicalQuantities;
-            m_traffic->setPlanePosition(situation.getCallsign().asString(),
+            m_traffic->addPlanePosition(situation.getCallsign().asString(),
                                         situation.latitude().value(CAngleUnit::deg()),
                                         situation.longitude().value(CAngleUnit::deg()),
                                         situation.getAltitude().value(CLengthUnit::ft()),
                                         situation.getPitch().value(CAngleUnit::deg()),
                                         situation.getBank().value(CAngleUnit::deg()),
-                                        situation.getHeading().value(CAngleUnit::deg()));
+                                        situation.getHeading().value(CAngleUnit::deg()),
+                                        situation.getAdjustedMSecsSinceEpoch()); // fixme sim machine's clock must be synchronized
         }
 
         void CSimulatorXPlane::ps_remoteProviderAddAircraftParts(const BlackMisc::Aviation::CCallsign &callsign, const BlackMisc::Aviation::CAircraftParts &parts)
diff --git a/src/plugins/simulator/xplane/xbustrafficproxy.cpp b/src/plugins/simulator/xplane/xbustrafficproxy.cpp
index bd129efdd..cf4e5406a 100644
--- a/src/plugins/simulator/xplane/xbustrafficproxy.cpp
+++ b/src/plugins/simulator/xplane/xbustrafficproxy.cpp
@@ -86,9 +86,9 @@ namespace BlackSimPlugin
             m_dbusInterface->callDBus(QLatin1String("removeAllPlanes"));
         }
 
-        void CXBusTrafficProxy::setPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading)
+        void CXBusTrafficProxy::addPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading, qint64 time)
         {
-            m_dbusInterface->callDBus(QLatin1String("setPlanePosition"), callsign, latitude, longitude, altitude, pitch, roll, heading);
+            m_dbusInterface->callDBus(QLatin1String("addPlanePosition"), callsign, latitude, longitude, altitude, pitch, roll, heading, time);
         }
 
         void CXBusTrafficProxy::setPlaneSurfaces(const QString &callsign, double gear, double flap, double spoiler, double speedBrake, double slat, double wingSweep, double thrust,
diff --git a/src/plugins/simulator/xplane/xbustrafficproxy.h b/src/plugins/simulator/xplane/xbustrafficproxy.h
index 2b60731aa..9cbd55609 100644
--- a/src/plugins/simulator/xplane/xbustrafficproxy.h
+++ b/src/plugins/simulator/xplane/xbustrafficproxy.h
@@ -102,8 +102,8 @@ namespace BlackSimPlugin
             //! \copydoc XBus::CTraffic::removeAllPlanes
             void removeAllPlanes();
 
-            //! \copydoc XBus::CTraffic::setPlanePosition
-            void setPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading);
+            //! \copydoc XBus::CTraffic::addPlanePosition
+            void addPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading, qint64 time);
 
             //! \copydoc XBus::CTraffic::setPlaneSurfaces
             void setPlaneSurfaces(const QString &callsign, double gear, double flap, double spoiler, double speedBrake, double slat, double wingSweep, double thrust,
diff --git a/src/xbus/traffic.cpp b/src/xbus/traffic.cpp
index a835904f0..c752c2179 100644
--- a/src/xbus/traffic.cpp
+++ b/src/xbus/traffic.cpp
@@ -225,7 +225,7 @@ namespace XBus
         m_planesById.clear();
     }
 
-    void CTraffic::setPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading)
+    void CTraffic::addPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading, qint64 time)
     {
         const auto plane = m_planesByCallsign.value(callsign, nullptr);
         if (plane)
diff --git a/src/xbus/traffic.h b/src/xbus/traffic.h
index 5ff468407..427c24da5 100644
--- a/src/xbus/traffic.h
+++ b/src/xbus/traffic.h
@@ -101,7 +101,7 @@ namespace XBus
         void removeAllPlanes();
 
         //! Set the position of a traffic aircraft
-        void setPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading);
+        void addPlanePosition(const QString &callsign, double latitude, double longitude, double altitude, double pitch, double roll, double heading, qint64 time);
 
         //! Set the flight control surfaces and lights of a traffic aircraft
         void setPlaneSurfaces(const QString &callsign, double gear, double flap, double spoiler, double speedBrake, double slat, double wingSweep, double thrust,