diff --git a/src/blackmisc/aviation/aircraftsituation.h b/src/blackmisc/aviation/aircraftsituation.h
index b4c05ffad..f27f28c36 100644
--- a/src/blackmisc/aviation/aircraftsituation.h
+++ b/src/blackmisc/aviation/aircraftsituation.h
@@ -99,7 +99,7 @@ namespace BlackMisc
             virtual BlackMisc::Geo::CLongitude longitude() const override { return this->m_position.longitude(); }
 
             //! Guess if aircraft is "on ground"
-            virtual bool isOnGroundGuessed() const;
+            bool isOnGroundGuessed() const;
 
             //! \copydoc Geo::ICoordinateGeodetic::geodeticHeight
             const BlackMisc::Aviation::CAltitude &geodeticHeight() const override { return this->m_position.geodeticHeight(); }
diff --git a/src/plugins/simulator/fsx/simulatorfsx.cpp b/src/plugins/simulator/fsx/simulatorfsx.cpp
index f9e64e59e..37650523b 100644
--- a/src/plugins/simulator/fsx/simulatorfsx.cpp
+++ b/src/plugins/simulator/fsx/simulatorfsx.cpp
@@ -846,7 +846,13 @@ namespace BlackSimPlugin
                     if (partsStatus.isSupportingParts() && !parts.isEmpty())
                     {
                         // we have parts, and use the closest ground
-                        isOnGround = parts.front().isOnGround();
+
+                        // \fixme onGround flag is not synchronized with positions and causes jumps during takeoff/landing.
+                        // We need to find a better way to synchronize both. Until then, use it for a very small speed range only.
+                        // This covers taxiing aircraft as well as a hovering helicopter.
+                        double groundSpeedKnots = interpolatedSituation.getGroundSpeed().value(CSpeedUnit::kts());
+                        if (groundSpeedKnots < 50) { isOnGround = parts.front().isOnGround(); }
+                        else { isOnGround = interpolatedSituation.isOnGroundGuessed(); }
                     }
                     else
                     {