diff --git a/src/blackmisc/aviation/aircraftparts.cpp b/src/blackmisc/aviation/aircraftparts.cpp
index f5a5bf925..d683283f6 100644
--- a/src/blackmisc/aviation/aircraftparts.cpp
+++ b/src/blackmisc/aviation/aircraftparts.cpp
@@ -31,6 +31,14 @@ namespace BlackMisc
                    QStringLiteral(" on ground: ") % BlackMisc::boolToYesNo(m_isOnGround);
         }
 
+        QJsonObject CAircraftParts::toIncrementalJson() const
+        {
+            QJsonObject json = this->toJson();
+            json.remove("is_full_data");
+            json.insert("is_full_data", QJsonValue(false));
+            return json;
+        }
+
         CVariant CAircraftParts::propertyByIndex(const BlackMisc::CPropertyIndex &index) const
         {
             if (index.isMyself()) { return CVariant::from(*this); }
diff --git a/src/blackmisc/aviation/aircraftparts.h b/src/blackmisc/aviation/aircraftparts.h
index 5b2280d54..6e6e66fc6 100644
--- a/src/blackmisc/aviation/aircraftparts.h
+++ b/src/blackmisc/aviation/aircraftparts.h
@@ -128,6 +128,9 @@ namespace BlackMisc
             //! \copydoc BlackMisc::Mixin::String::toQString
             QString convertToQString(bool i18n = false) const;
 
+            //! Incremental JSON object
+            QJsonObject toIncrementalJson() const;
+
         private:
             CAircraftLights m_lights;
             CAircraftEngineList m_engines;