diff --git a/src/blackcore/data/aircraftmodels.h b/src/blackcore/data/aircraftmodels.h
deleted file mode 100644
index 25ddd7f3b..000000000
--- a/src/blackcore/data/aircraftmodels.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright (C) 2015
- * swift project community / contributors
- *
- * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
- * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
- * including this file, may be copied, modified, propagated, or distributed except according to the terms
- * contained in the LICENSE file.
- */
-
-//! \file
-
-#ifndef BLACKCORE_DATA_AIRCRAFTMODELS_H
-#define BLACKCORE_DATA_AIRCRAFTMODELS_H
-
-#include "blackcore/blackcoreexport.h"
-#include "blackmisc/datacache.h"
-#include "blackmisc/simulation/aircraftmodellist.h"
-#include "blackmisc/variant.h"
-
-namespace BlackCore
-{
-    namespace Data
-    {
-        //! Trait for own simulator models
-        struct OwnSimulatorAircraftModels : public BlackMisc::CDataTrait<BlackMisc::Simulation::CAircraftModelList>
-        {
-            //! Key in data cache
-            static const char *key() { return "simulator/models"; }
-
-            //! Default value
-            static const BlackMisc::Simulation::CAircraftModelList &defaultValue()
-            {
-                static const BlackMisc::Simulation::CAircraftModelList defaultValue;
-                return defaultValue;
-            }
-        };
-
-        //! Trait for vPilot derived models
-        struct VPilotAircraftModels : public BlackMisc::CDataTrait<BlackMisc::Simulation::CAircraftModelList>
-        {
-            //! Key in data cache
-            static const char *key() { return "vpilot/models"; }
-
-            //! Default value
-            static const BlackMisc::Simulation::CAircraftModelList &defaultValue()
-            {
-                static const BlackMisc::Simulation::CAircraftModelList defaultValue;
-                return defaultValue;
-            }
-        };
-
-    } // ns
-} // ns
-
-#endif // guard
diff --git a/src/blackcore/modeldatareader.cpp b/src/blackcore/modeldatareader.cpp
index da277c299..979655a3c 100644
--- a/src/blackcore/modeldatareader.cpp
+++ b/src/blackcore/modeldatareader.cpp
@@ -82,7 +82,7 @@ namespace BlackCore
     {
         if (modelString.isEmpty()) { return CAircraftModel(); }
         CAircraftModelList models(getModels());
-        return models.findFirstByModelString(modelString);
+        return models.findFirstByModelStringOrDefault(modelString);
     }
 
     CAircraftModelList CModelDataReader::getModelsForAircraftDesignatorAndLiveryCombinedCode(const QString &aircraftDesignator, const QString &combinedCode)
diff --git a/src/blackmisc/blackmisc.pro b/src/blackmisc/blackmisc.pro
index a67e8fd74..5eff8524d 100644
--- a/src/blackmisc/blackmisc.pro
+++ b/src/blackmisc/blackmisc.pro
@@ -55,7 +55,7 @@ SOURCES +=  *.cpp \
             $$PWD/simulation/fscommon/*.cpp \
             $$PWD/simulation/fsx/*.cpp \
             $$PWD/simulation/xplane/*.cpp \
-#           $$PWD/simulation/data/*.cpp \
+            $$PWD/simulation/data/*.cpp \
             $$PWD/weather/*.cpp
 
 win32 {
diff --git a/src/blackmisc/simulation/aircraftmatcher.cpp b/src/blackmisc/simulation/aircraftmatcher.cpp
index 8785a6acb..b4b68321e 100644
--- a/src/blackmisc/simulation/aircraftmatcher.cpp
+++ b/src/blackmisc/simulation/aircraftmatcher.cpp
@@ -197,7 +197,7 @@ namespace BlackMisc
 
         CAircraftModel CAircraftMatcher::matchByExactModelName(const CSimulatedAircraft &remoteAircraft)
         {
-            return this->m_installedModels.findFirstByModelString(remoteAircraft.getModelString());
+            return this->m_installedModels.findFirstByModelStringOrDefault(remoteAircraft.getModelString());
         }
 
         CAircraftModel CAircraftMatcher::matchInstalledModelsByIcaoData(const CSimulatedAircraft &remoteAircraft)
diff --git a/src/blackmisc/simulation/aircraftmodellist.cpp b/src/blackmisc/simulation/aircraftmodellist.cpp
index 4fe81be8e..925bbbe7b 100644
--- a/src/blackmisc/simulation/aircraftmodellist.cpp
+++ b/src/blackmisc/simulation/aircraftmodellist.cpp
@@ -50,7 +50,7 @@ namespace BlackMisc
             });
         }
 
-        CAircraftModel CAircraftModelList::findFirstByModelString(const QString &modelString, Qt::CaseSensitivity sensitivity) const
+        CAircraftModel CAircraftModelList::findFirstByModelStringOrDefault(const QString &modelString, Qt::CaseSensitivity sensitivity) const
         {
             return this->findFirstByOrDefault([ = ](const CAircraftModel & model)
             {
diff --git a/src/blackmisc/simulation/aircraftmodellist.h b/src/blackmisc/simulation/aircraftmodellist.h
index db2123d71..ec8406eb8 100644
--- a/src/blackmisc/simulation/aircraftmodellist.h
+++ b/src/blackmisc/simulation/aircraftmodellist.h
@@ -49,7 +49,7 @@ namespace BlackMisc
             CAircraftModelList findByModelString(const QString &modelString, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive) const;
 
             //! Find first by model string
-            CAircraftModel findFirstByModelString(const QString &modelString, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive) const;
+            CAircraftModel findFirstByModelStringOrDefault(const QString &modelString, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive) const;
 
             //! Find models starting with
             CAircraftModelList findModelsStartingWith(const QString &modelString, Qt::CaseSensitivity sensitivity = Qt::CaseInsensitive) const;
diff --git a/src/blackmisc/simulation/aircraftmodelloader.cpp b/src/blackmisc/simulation/aircraftmodelloader.cpp
index b58dcef5d..b8ba7c0c0 100644
--- a/src/blackmisc/simulation/aircraftmodelloader.cpp
+++ b/src/blackmisc/simulation/aircraftmodelloader.cpp
@@ -22,6 +22,7 @@ namespace BlackMisc
         IAircraftModelLoader::IAircraftModelLoader(const CSimulatorInfo &info, const QString &rootDirectory, const QStringList &excludeDirs) :
             m_simulatorInfo(info), m_rootDirectory(rootDirectory), m_excludedDirectories(excludeDirs)
         {
+            Q_ASSERT_X(info.isSingleSimulator(), Q_FUNC_INFO, "Only one simulator per loader");
             connect(this, &IAircraftModelLoader::loadingFinished, this, &IAircraftModelLoader::ps_loadFinished);
         }
 
@@ -34,7 +35,7 @@ namespace BlackMisc
         {
             if (directory.isEmpty()) { return false; }
             QDir dir(directory);
-            //! \todo not available network dir can make this hang here
+            //! \todo not available network dir can make this hang here, however there is no obvious solution to that
             return dir.exists();
         }
 
@@ -44,7 +45,7 @@ namespace BlackMisc
             for (CAircraftModel &simModel : modelsFromSimulator)
             {
                 if (simModel.hasValidDbKey()) { continue; } // already done
-                CAircraftModel dbModel(dbModels.findFirstByModelString(simModel.getModelString()));
+                CAircraftModel dbModel(dbModels.findFirstByModelStringOrDefault(simModel.getModelString()));
                 if (!dbModel.hasValidDbKey())
                 {
                     continue; // not found
@@ -70,6 +71,36 @@ namespace BlackMisc
             return true;
         }
 
+        CAircraftModelList IAircraftModelLoader::getAircraftModels() const
+        {
+            return this->m_caches.getModels(this->m_simulatorInfo);
+        }
+
+        QDateTime IAircraftModelLoader::getCacheTimestamp() const
+        {
+            return this->m_caches.getCacheTimestamp(this->m_simulatorInfo);
+        }
+
+        void IAircraftModelLoader::syncronizeCache()
+        {
+            return this->m_caches.syncronize(this->m_simulatorInfo);
+        }
+
+        bool IAircraftModelLoader::hasCachedData() const
+        {
+            return !this->m_caches.getModels(this->m_simulatorInfo).isEmpty();
+        }
+
+        CStatusMessage IAircraftModelLoader::setModelsInCache(const CAircraftModelList &models)
+        {
+            return this->m_caches.setModels(models, this->m_simulatorInfo);
+        }
+
+        CStatusMessage IAircraftModelLoader::clearCache()
+        {
+            return this->setModelsInCache(CAircraftModelList());
+        }
+
         void IAircraftModelLoader::startLoading(LoadMode mode, const CAircraftModelList &dbModels)
         {
             if (this->m_loadingInProgress) { return; }
@@ -98,19 +129,19 @@ namespace BlackMisc
             this->startLoadingFromDisk(mode, dbModels);
         }
 
-        const CSimulatorInfo &IAircraftModelLoader::supportedSimulators() const
+        const CSimulatorInfo &IAircraftModelLoader::getSimulator() const
         {
             return m_simulatorInfo;
         }
 
-        QString IAircraftModelLoader::supportedSimulatorsAsString() const
+        QString IAircraftModelLoader::getSimulatorAsString() const
         {
             return m_simulatorInfo.toQString();
         }
 
         bool IAircraftModelLoader::supportsSimulator(const CSimulatorInfo &info)
         {
-            return supportedSimulators().matchesAny(info);
+            return getSimulator().matchesAny(info);
         }
 
         void IAircraftModelLoader::cancelLoading()
@@ -126,16 +157,20 @@ namespace BlackMisc
 
         std::unique_ptr<IAircraftModelLoader> IAircraftModelLoader::createModelLoader(const CSimulatorInfo &simInfo)
         {
+            std::unique_ptr<IAircraftModelLoader> loader;
             if (simInfo.xplane())
             {
-                return std::make_unique<CAircraftModelLoaderXPlane>(
+                loader = std::make_unique<CAircraftModelLoaderXPlane>(
                            CSimulatorInfo(CSimulatorInfo::XPLANE),
                            CXPlaneUtil::xplaneRootDir());
             }
             else
             {
-                return CAircraftCfgParser::createModelLoader(simInfo);
+                loader = CAircraftCfgParser::createModelLoader(simInfo);
             }
+            // make sure the cache is really available
+            loader->syncronizeCache();
+            return loader;
         }
     } // ns
 } // ns
diff --git a/src/blackmisc/simulation/aircraftmodelloader.h b/src/blackmisc/simulation/aircraftmodelloader.h
index 73b514845..75b2bfa76 100644
--- a/src/blackmisc/simulation/aircraftmodelloader.h
+++ b/src/blackmisc/simulation/aircraftmodelloader.h
@@ -65,28 +65,22 @@ namespace BlackMisc
             virtual bool isLoadingFinished() const = 0;
 
             //! The loaded models
-            virtual const BlackMisc::Simulation::CAircraftModelList &getAircraftModels() const = 0;
+            BlackMisc::Simulation::CAircraftModelList getAircraftModels() const;
 
             //! Count of loaded models
-            const int getAircraftModelsCount() const { return getAircraftModels().size(); }
-
-            //! Cache timestamp
-            virtual QDateTime getCacheTimestamp() const = 0;
+            int getAircraftModelsCount() const { return getAircraftModels().size(); }
 
             //! Model files updated?
             virtual bool areModelFilesUpdated() const = 0;
 
-            //! Any cached data
-            virtual bool hasCachedData() const = 0;
-
             //! A representive pixmap for given model
             virtual BlackMisc::CPixmap iconForModel(const QString &modelName, BlackMisc::CStatusMessage &statusMessage) const = 0;
 
-            //! Which simulators are supported by that very loader
-            const BlackMisc::Simulation::CSimulatorInfo &supportedSimulators() const;
+            //! Which simulator is supported by that very loader
+            const BlackMisc::Simulation::CSimulatorInfo &getSimulator() const;
 
             //! Supported simulators as string
-            QString supportedSimulatorsAsString() const;
+            QString getSimulatorAsString() const;
 
             //! Is the given simulator supported?
             bool supportsSimulator(const BlackMisc::Simulation::CSimulatorInfo &info);
@@ -100,6 +94,9 @@ namespace BlackMisc
             //! Create a loader
             static std::unique_ptr<IAircraftModelLoader> createModelLoader(const BlackMisc::Simulation::CSimulatorInfo &simInfo);
 
+            //! Merge with DB data if possible
+            static bool mergeWithDbData(BlackMisc::Simulation::CAircraftModelList &modelsFromSimulator, const BlackMisc::Simulation::CAircraftModelList &dbModels);
+
         signals:
             //! Parsing is finished
             void loadingFinished(bool success, const BlackMisc::Simulation::CSimulatorInfo &simulator);
@@ -108,20 +105,33 @@ namespace BlackMisc
             //! Constructor
             IAircraftModelLoader(const CSimulatorInfo &info, const QString &rootDirectory, const QStringList &excludeDirs = {});
 
+            //! Cache timestamp
+            QDateTime getCacheTimestamp() const;
+
+            //! Make sure cache is syncronized
+            void syncronizeCache();
+
+            //! Any cached data?
+            bool hasCachedData() const;
+
+            //! Set models in cache
+            BlackMisc::CStatusMessage setModelsInCache(const BlackMisc::Simulation::CAircraftModelList &models);
+
+            //! Clear cache
+            BlackMisc::CStatusMessage clearCache();
+
             //! Check if directory exists
             bool existsDir(const QString &directory) const;
 
             //! Start the loading process from disk
             virtual void startLoadingFromDisk(LoadMode mode, const BlackMisc::Simulation::CAircraftModelList &dbModels) = 0;
 
-            //! Merge with DB data if possible
-            virtual bool mergeWithDbData(BlackMisc::Simulation::CAircraftModelList &modelsFromSimulator, const BlackMisc::Simulation::CAircraftModelList &dbModels);
-
-            BlackMisc::Simulation::CSimulatorInfo m_simulatorInfo; //!< Corresponding simulator
-            std::atomic<bool> m_cancelLoading { false };           //!< flag
-            std::atomic<bool> m_loadingInProgress { false };       //!< Loading in progress
-            QString m_rootDirectory;                               //!< root directory parsing aircraft.cfg files
-            QStringList m_excludedDirectories;                     //!< directories not to be parsed
+            BlackMisc::Simulation::CSimulatorInfo m_simulatorInfo;       //!< Corresponding simulator
+            std::atomic<bool> m_cancelLoading { false };                 //!< flag
+            std::atomic<bool> m_loadingInProgress { false };             //!< Loading in progress
+            QString           m_rootDirectory;                           //!< root directory parsing aircraft.cfg files
+            QStringList       m_excludedDirectories;                     //!< directories not to be parsed
+            BlackMisc::Simulation::Data::CModelCaches m_caches { this }; //!< caches
 
         protected slots:
             //! Loading finished
diff --git a/src/blackmisc/simulation/data/modelcaches.cpp b/src/blackmisc/simulation/data/modelcaches.cpp
new file mode 100644
index 000000000..3c5d01aa8
--- /dev/null
+++ b/src/blackmisc/simulation/data/modelcaches.cpp
@@ -0,0 +1,144 @@
+/* Copyright (C) 2016
+ * swift project community / contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "modelcaches.h"
+
+namespace BlackMisc
+{
+    namespace Simulation
+    {
+        namespace Data
+        {
+            CModelCaches::CModelCaches(QObject *parent) : QObject(parent)
+            { }
+
+            CAircraftModelList CModelCaches::getModels(const CSimulatorInfo &simulator) const
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.get();
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.get();
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.get();
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.get();
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return CAircraftModelList();
+                }
+            }
+
+            CStatusMessage CModelCaches::setModels(const CAircraftModelList &models, const CSimulatorInfo &simulator)
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.set(models);
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.set(models);
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.set(models);
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.set(models);
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return CStatusMessage();
+                }
+            }
+
+            QDateTime CModelCaches::getCacheTimestamp(const CSimulatorInfo &simulator) const
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.getTimestamp();
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.getTimestamp();
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.getTimestamp();
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.getTimestamp();
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return QDateTime();
+                }
+            }
+
+            void CModelCaches::syncronize(const CSimulatorInfo &simulator)
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.synchronize(); break;
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.synchronize(); break;
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.synchronize(); break;
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.synchronize(); break;
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                }
+            }
+
+            CModelSetCaches::CModelSetCaches(QObject *parent) : QObject(parent)
+            { }
+
+            CAircraftModelList CModelSetCaches::getModels(const CSimulatorInfo &simulator) const
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.get();
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.get();
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.get();
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.get();
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return CAircraftModelList();
+                }
+            }
+
+            CStatusMessage CModelSetCaches::setModels(const CAircraftModelList &models, const CSimulatorInfo &simulator)
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.set(models);
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.set(models);
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.set(models);
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.set(models);
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return CStatusMessage();
+                }
+            }
+
+            QDateTime CModelSetCaches::getCacheTimestamp(const CSimulatorInfo &simulator) const
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.getTimestamp();
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.getTimestamp();
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.getTimestamp();
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.getTimestamp();
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                    return QDateTime();
+                }
+            }
+
+            void CModelSetCaches::syncronize(const CSimulatorInfo &simulator)
+            {
+                Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                switch (simulator.getSimulator())
+                {
+                case CSimulatorInfo::FS9: return this->m_modelCacheFs9.synchronize(); break;
+                case CSimulatorInfo::FSX: return this->m_modelCacheFsx.synchronize(); break;
+                case CSimulatorInfo::P3D: return this->m_modelCacheP3D.synchronize(); break;
+                case CSimulatorInfo::XPLANE: return this->m_modelCacheXP.synchronize(); break;
+                default:
+                    Q_ASSERT_X(simulator.isSingleSimulator(), Q_FUNC_INFO, "No single simulator");
+                }
+            }
+
+        } // ns
+    } // ns
+} // ns
diff --git a/src/blackmisc/simulation/data/modelcaches.h b/src/blackmisc/simulation/data/modelcaches.h
index 0c9c1d73e..3f100681b 100644
--- a/src/blackmisc/simulation/data/modelcaches.h
+++ b/src/blackmisc/simulation/data/modelcaches.h
@@ -32,33 +32,137 @@ namespace BlackMisc
                 }
             };
 
-            //! Trait for XP model cache
+            //! \name Caches for own models on disk, loaded by BlackMisc::Simulation::IAircraftModelLoader
+            //! @{
+
+            //! XPlane
             struct ModelCacheXP : public ModelCache
             {
                 //! Key in data cache
                 static const char *key() { return "modelcachexp"; }
             };
 
-            //! Trait for FSX model cache
+            //! FSX
             struct ModelCacheFsx : public ModelCache
             {
                 //! Key in data cache
                 static const char *key() { return "modelcachefsx"; }
             };
 
-            //! Trait for FS9 model cache
+            //! FS9
             struct ModelCacheFs9 : public ModelCache
             {
                 //! Key in data cache
                 static const char *key() { return "modelcachefs9"; }
             };
 
-            //! Trait for P3D model cache
+            //! P3D
             struct ModelCacheP3D : public ModelCache
             {
                 //! Key in data cache
                 static const char *key() { return "modelcachep3d"; }
             };
+            //! @}
+
+
+            //! \name Caches for choosen model sets
+            //! @{
+
+            //! XPlane
+            struct ModelSetCacheXP : public ModelCache
+            {
+                //! Key in data cache
+                static const char *key() { return "modelsetxp"; }
+            };
+
+            //! FSX
+            struct ModelSetCacheFsx : public ModelCache
+            {
+                //! Key in data cache
+                static const char *key() { return "modelsetfsx"; }
+            };
+
+            //! FS9
+            struct ModelSetCacheFs9 : public ModelCache
+            {
+                //! Key in data cache
+                static const char *key() { return "modelsetfs9"; }
+            };
+
+            //! P3D
+            struct ModelSetCacheP3D : public ModelCache
+            {
+                //! Key in data cache
+                static const char *key() { return "modelsetp3d"; }
+            };
+            //! @}
+
+
+            //! Trait for vPilot derived models
+            struct VPilotAircraftModels : public BlackMisc::CDataTrait<BlackMisc::Simulation::CAircraftModelList>
+            {
+                //! Key in data cache
+                static const char *key() { return "vpilot/models"; }
+            };
+
+            //! Bundle of caches for all simulators
+            //! \remark Temp. workaround
+            class CModelCaches : public QObject
+            {
+                Q_OBJECT
+
+            public:
+                //! Construtor
+                CModelCaches(QObject *parent = nullptr);
+
+                //! Models
+                CAircraftModelList getModels(const BlackMisc::Simulation::CSimulatorInfo &simulator) const;
+
+                //! Set models
+                BlackMisc::CStatusMessage setModels(const BlackMisc::Simulation::CAircraftModelList &models, const BlackMisc::Simulation::CSimulatorInfo &simulator);
+
+                //! Cache timestamp
+                QDateTime getCacheTimestamp(const BlackMisc::Simulation::CSimulatorInfo &simulator) const;
+
+                //! Syncronize
+                void syncronize(const BlackMisc::Simulation::CSimulatorInfo &simulator);
+
+            private:
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheFsx> m_modelCacheFsx {this };  //!< FSX cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheFs9> m_modelCacheFs9 {this };  //!< FS9 cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheP3D> m_modelCacheP3D {this };  //!< P3D cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheXP>  m_modelCacheXP  {this };  //!< XP cache
+            };
+
+
+            //! Bundle of caches for model sets of all simulators
+            //! \remark Temp. workaround
+            class CModelSetCaches : public QObject
+            {
+                Q_OBJECT
+
+            public:
+                //! Construtor
+                CModelSetCaches(QObject *parent = nullptr);
+
+                //! Models
+                CAircraftModelList getModels(const BlackMisc::Simulation::CSimulatorInfo &simulator) const;
+
+                //! Set models
+                BlackMisc::CStatusMessage setModels(const BlackMisc::Simulation::CAircraftModelList &models, const BlackMisc::Simulation::CSimulatorInfo &simulator);
+
+                //! Cache timestamp
+                QDateTime getCacheTimestamp(const BlackMisc::Simulation::CSimulatorInfo &simulator) const;
+
+                //! Syncronize
+                void syncronize(const BlackMisc::Simulation::CSimulatorInfo &simulator);
+
+            private:
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelSetCacheFsx> m_modelCacheFsx {this };  //!< FSX cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelSetCacheFs9> m_modelCacheFs9 {this };  //!< FS9 cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelSetCacheP3D> m_modelCacheP3D {this };  //!< P3D cache
+                BlackMisc::CData<BlackMisc::Simulation::Data::ModelSetCacheXP>  m_modelCacheXP  {this };  //!< XP cache
+            };
 
         } // ns
     } // ns
diff --git a/src/blackmisc/simulation/fscommon/aircraftcfgparser.cpp b/src/blackmisc/simulation/fscommon/aircraftcfgparser.cpp
index e4f73a08a..4e05b0315 100644
--- a/src/blackmisc/simulation/fscommon/aircraftcfgparser.cpp
+++ b/src/blackmisc/simulation/fscommon/aircraftcfgparser.cpp
@@ -109,7 +109,7 @@ namespace BlackMisc
                         CAircraftModelList models;
                         if (ok)
                         {
-                            models = (aircraftCfgEntriesList.toAircraftModelList(this->supportedSimulators()));
+                            models = (aircraftCfgEntriesList.toAircraftModelList(this->getSimulator()));
                             this->mergeWithDbData(models, dbModels);
                         }
                         return std::make_tuple(aircraftCfgEntriesList, models, ok);
@@ -139,7 +139,7 @@ namespace BlackMisc
                 {
                     bool ok;
                     this->m_parsedCfgEntriesList = performParsing(m_rootDirectory, m_excludedDirectories, &ok);
-                    CAircraftModelList models(this->m_parsedCfgEntriesList.toAircraftModelList(this->supportedSimulators()));
+                    CAircraftModelList models(this->m_parsedCfgEntriesList.toAircraftModelList(this->getSimulator()));
                     this->mergeWithDbData(models, dbModels);
                     const bool hasData = !models.isEmpty();
                     if (hasData)
@@ -164,24 +164,6 @@ namespace BlackMisc
                 return !m_parserWorker || m_parserWorker->isFinished();
             }
 
-            QDateTime CAircraftCfgParser::getCacheTimestamp() const
-            {
-                if (this->m_simulatorInfo.fsx())
-                {
-                    return m_modelCacheFsx.getTimestamp();
-                }
-                else if (this->m_simulatorInfo.fs9())
-                {
-                    return m_modelCacheFs9.getTimestamp();
-                }
-                else if (this->m_simulatorInfo.p3d())
-                {
-                    return m_modelCacheP3D.getTimestamp();
-                }
-                Q_ASSERT_X(false, Q_FUNC_INFO, "Illegal simulator info");
-                return QDateTime();
-            }
-
             bool CAircraftCfgParser::areModelFilesUpdated() const
             {
                 const QDateTime cacheTs(getCacheTimestamp());
@@ -189,61 +171,6 @@ namespace BlackMisc
                 return CFileUtils::containsFileNewerThan(cacheTs, this->getRootDirectory(), true, { fileFilter() }, this->m_excludedDirectories);
             }
 
-            bool CAircraftCfgParser::hasCachedData() const
-            {
-                if (this->m_simulatorInfo.fsx())
-                {
-                    return !m_modelCacheFsx.get().isEmpty();
-                }
-                else if (this->m_simulatorInfo.fs9())
-                {
-                    return !m_modelCacheFs9.get().isEmpty();
-                }
-                else if (this->m_simulatorInfo.p3d())
-                {
-                    return !m_modelCacheP3D.get().isEmpty();
-                }
-                Q_ASSERT_X(false, Q_FUNC_INFO, "Illegal simulator info");
-                return false;
-            }
-
-            const CAircraftModelList &CAircraftCfgParser::getAircraftModels() const
-            {
-                static const CAircraftModelList empty;
-                if (this->m_simulatorInfo.fsx())
-                {
-                    return m_modelCacheFsx.get();
-                }
-                else if (this->m_simulatorInfo.fs9())
-                {
-                    return m_modelCacheFs9.get();
-                }
-                else if (this->m_simulatorInfo.p3d())
-                {
-                    return m_modelCacheP3D.get();
-                }
-                Q_ASSERT_X(false, Q_FUNC_INFO, "Illegal simulator info");
-                return empty;
-            }
-
-            CStatusMessage CAircraftCfgParser::setModelsInCache(const CAircraftModelList &models)
-            {
-                if (this->m_simulatorInfo.fsx())
-                {
-                    return m_modelCacheFsx.set(models);
-                }
-                else if (this->m_simulatorInfo.fs9())
-                {
-                    return m_modelCacheFs9.set(models);
-                }
-                else if (this->m_simulatorInfo.p3d())
-                {
-                    return m_modelCacheP3D.set(models);
-                }
-                Q_ASSERT_X(false, Q_FUNC_INFO, "Illegal simulator info");
-                return CStatusMessage(this, CStatusMessage::SeverityError, "Wrong simulator type");
-            }
-
             CAircraftCfgEntriesList CAircraftCfgParser::performParsing(const QString &directory, const QStringList &excludeDirectories, bool *ok)
             {
                 //
diff --git a/src/blackmisc/simulation/fscommon/aircraftcfgparser.h b/src/blackmisc/simulation/fscommon/aircraftcfgparser.h
index ecc52fc8a..31d250c86 100644
--- a/src/blackmisc/simulation/fscommon/aircraftcfgparser.h
+++ b/src/blackmisc/simulation/fscommon/aircraftcfgparser.h
@@ -48,18 +48,12 @@ namespace BlackMisc
                 virtual BlackMisc::CPixmap iconForModel(const QString &modelName, BlackMisc::CStatusMessage &statusMessage) const override;
                 virtual bool isLoadingFinished() const override;
                 virtual bool areModelFilesUpdated() const override;
-                virtual bool hasCachedData() const override;
-                virtual QDateTime getCacheTimestamp() const override;
-                virtual const BlackMisc::Simulation::CAircraftModelList &getAircraftModels() const override;
                 //! @}
 
                 //! Create an parser object for given simulator
                 static std::unique_ptr<CAircraftCfgParser> createModelLoader(const BlackMisc::Simulation::CSimulatorInfo &simInfo);
 
             protected:
-                //! Set cached values
-                BlackMisc::CStatusMessage setModelsInCache(const BlackMisc::Simulation::CAircraftModelList &models);
-
                 //! \name Interface functions
                 //! @{
                 virtual void startLoadingFromDisk(LoadMode mode, const BlackMisc::Simulation::CAircraftModelList &dbModels) override;
@@ -94,11 +88,7 @@ namespace BlackMisc
                 CAircraftCfgEntriesList m_parsedCfgEntriesList; //!< parsed entries
                 QPointer<BlackMisc::CWorker> m_parserWorker;    //!< worker will destroy itself, so weak pointer
 
-                //! \todo KB/MS Is there nothing better than having 3 cache members?
-                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheFsx> m_modelCacheFsx {this, &CAircraftCfgParser::ps_cacheChanged};  //!< FSX cache
-                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheFs9> m_modelCacheFs9 {this, &CAircraftCfgParser::ps_cacheChanged};  //!< FS9 cache
-                BlackMisc::CData<BlackMisc::Simulation::Data::ModelCacheP3D> m_modelCacheP3D {this, &CAircraftCfgParser::ps_cacheChanged};  //!< P3D cache
-
+                //! Files to be used
                 static const QString &fileFilter();
             };
         } // namespace
diff --git a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
index 434ebdbb2..156b9908d 100644
--- a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
+++ b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.cpp
@@ -64,9 +64,9 @@ namespace BlackMisc
 
             void CAircraftModelLoaderXPlane::startLoadingFromDisk(LoadMode mode, const CAircraftModelList &dbModels)
             {
-                m_installedModels.clear();
                 if (m_rootDirectory.isEmpty())
                 {
+                    this->clearCache();
                     emit loadingFinished(false, this->m_simulatorInfo);
                     return;
                 }
@@ -90,9 +90,9 @@ namespace BlackMisc
                 }
                 else if (mode.testFlag(LoadDirectly))
                 {
-                    m_installedModels = performParsing(m_rootDirectory, m_excludedDirectories);
-                    mergeWithDbData(m_installedModels, dbModels);
-                    emit loadingFinished(true, this->m_simulatorInfo);
+                    CAircraftModelList models(performParsing(m_rootDirectory, m_excludedDirectories));
+                    mergeWithDbData(models, dbModels);
+                    updateInstalledModels(models);
                 }
             }
 
@@ -108,26 +108,10 @@ namespace BlackMisc
                 return CFileUtils::containsFileNewerThan(cacheTs, this->getRootDirectory(), true, {fileFilterCsl(), fileFilterFlyable()},  this->m_excludedDirectories);
             }
 
-            bool CAircraftModelLoaderXPlane::hasCachedData() const
-            {
-                //! \todo KB
-                return false;
-            }
-
-            QDateTime CAircraftModelLoaderXPlane::getCacheTimestamp() const
-            {
-                //! \todo KB add cache and report back
-                return QDateTime();
-            }
-
-            const CAircraftModelList &CAircraftModelLoaderXPlane::getAircraftModels() const
-            {
-                return m_installedModels;
-            }
 
             void CAircraftModelLoaderXPlane::updateInstalledModels(const CAircraftModelList &models)
             {
-                m_installedModels = models;
+                this->setModelsInCache(models);
                 emit loadingFinished(true, this->m_simulatorInfo);
             }
 
diff --git a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.h b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.h
index 41ed27e2e..a416cc474 100644
--- a/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.h
+++ b/src/blackmisc/simulation/xplane/aircraftmodelloaderxplane.h
@@ -46,9 +46,6 @@ namespace BlackMisc
                 virtual BlackMisc::CPixmap iconForModel(const QString &modelName, BlackMisc::CStatusMessage &statusMessage) const override;
                 virtual bool isLoadingFinished() const override;
                 virtual bool areModelFilesUpdated() const override;
-                virtual bool hasCachedData() const override;
-                virtual QDateTime getCacheTimestamp() const override;
-                virtual const BlackMisc::Simulation::CAircraftModelList &getAircraftModels() const override;
                 //! @}
 
             public slots:
@@ -113,7 +110,6 @@ namespace BlackMisc
 
                 QPointer<BlackMisc::CWorker> m_parserWorker;    //!< worker will destroy itself, so weak pointer
                 QVector<CSLPackage> m_cslPackages;              //!< Parsed Packages. No lock required since accessed only from one thread
-                BlackMisc::Simulation::CAircraftModelList m_installedModels;
 
                 static const QString &fileFilterFlyable();
                 static const QString &fileFilterCsl();