diff --git a/src/blackmisc/directories.cpp b/src/blackmisc/directories.cpp
new file mode 100644
index 000000000..9ffb8f304
--- /dev/null
+++ b/src/blackmisc/directories.cpp
@@ -0,0 +1,104 @@
+/* Copyright (C) 2018
+ * 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 "blackmisc/directories.h"
+#include "directoryutils.h"
+#include <QFileInfo>
+#include <QDir>
+
+namespace BlackMisc
+{
+    QString CDirectories::getFlightPlanDirectoryOrDefault() const
+    {
+        return this->existingOrDefaultDir(this->getFlightPlanDirectory(), CDirectoryUtils::documentationDirectory());
+    }
+
+    QString CDirectories::getLastViewJsonDirectoryOrDefault() const
+    {
+        return this->existingOrDefaultDir(this->getLastViewJsonDirectory(), CDirectoryUtils::documentationDirectory());
+    }
+
+    QString CDirectories::getLastModelDirectoryOrDefault() const
+    {
+        return this->existingOrDefaultDir(this->getLastModelDirectory(), this->getLastViewJsonDirectoryOrDefault());
+    }
+
+    void CDirectories::setLastModelDirectory(const QString &dir)
+    {
+        m_dirLastModelJson = dir;
+        if (this->hasLastViewJsonDirectory()) { return; }
+        this->setLastViewJsonDirectory(dir);
+    }
+
+    QString CDirectories::getLastModelStashDirectoryOrDefault() const
+    {
+        return this->existingOrDefaultDir(this->getLastModelStashDirectory(), this->getLastModelDirectoryOrDefault());
+    }
+
+    void CDirectories::setLastModelStashDirectory(const QString &dir)
+    {
+        m_dirLastModelStashJson = dir;
+        if (this->hasLastModelDirectory()) { return; }
+        this->setLastModelDirectory(dir);
+    }
+
+    QString CDirectories::convertToQString(bool i18n) const
+    {
+        Q_UNUSED(i18n);
+        return m_dirFlightPlan;
+    }
+
+    CVariant CDirectories::propertyByIndex(const BlackMisc::CPropertyIndex &index) const
+    {
+        if (index.isMyself()) { return CVariant::from(*this); }
+        const ColumnIndex i = index.frontCasted<ColumnIndex>();
+        switch (i)
+        {
+        case IndexDirFlightPlan: return CVariant::fromValue(m_dirFlightPlan);
+        case IndexDirFlightPlanOrDefault: return CVariant::fromValue(this->getFlightPlanDirectoryOrDefault());
+        case IndexDirLastViewJson: return CVariant::fromValue(m_dirLastViewJson);
+        case IndexDirLastViewJsonOrDefault: return CVariant::fromValue(this->getLastViewJsonDirectoryOrDefault());
+        case IndexDirLastModelJson: return CVariant::fromValue(m_dirLastModelStashJson);
+        case IndexDirLastModelJsonOrDefault: return CVariant::fromValue(this->getLastModelDirectoryOrDefault());
+        case IndexDirLastModelStashJson: return CVariant::fromValue(m_dirLastModelStashJson);
+        case IndexDirLastModelStashJsonOrDefault: return CVariant::fromValue(this->getLastModelStashDirectoryOrDefault());
+        default: return CValueObject::propertyByIndex(index);
+        }
+    }
+
+    void CDirectories::setPropertyByIndex(const CPropertyIndex &index, const CVariant &variant)
+    {
+        if (index.isMyself()) { (*this) = variant.to<CDirectories>(); return; }
+        const ColumnIndex i = index.frontCasted<ColumnIndex>();
+        switch (i)
+        {
+        case IndexDirFlightPlan: this->setFlightPlanDirectory(variant.toQString()); break;
+        case IndexDirLastViewJsonOrDefault:
+        case IndexDirLastViewJson: this->setLastViewJsonDirectory(variant.toQString()); break;
+        case IndexDirLastModelJsonOrDefault:
+        case IndexDirLastModelJson: this->setLastModelDirectory(variant.toQString()); break;
+        case IndexDirLastModelStashJsonOrDefault:
+        case IndexDirLastModelStashJson: this->setLastModelStashDirectory(variant.toQString()); break;
+        default: CValueObject::setPropertyByIndex(index, variant); break;
+        }
+    }
+
+    QString CDirectories::fileNameToDirectory(const QString &fileName)
+    {
+        const QFileInfo fi(fileName);
+        return fi.dir().absolutePath();
+    }
+
+    QString CDirectories::existingOrDefaultDir(const QString &checkDir, const QString &defaultDir) const
+    {
+        const QDir d(checkDir);
+        if (d.exists()) { return checkDir; }
+        return defaultDir;
+    }
+} // namespace
diff --git a/src/blackmisc/directories.h b/src/blackmisc/directories.h
new file mode 100644
index 000000000..8e1612886
--- /dev/null
+++ b/src/blackmisc/directories.h
@@ -0,0 +1,135 @@
+/* Copyright (C) 2018
+ * 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 BLACKMISC_DIRECTORIES_H
+#define BLACKMISC_DIRECTORIES_H
+
+#include "blackmisc/settingscache.h"
+#include "blackmisc/valueobject.h"
+#include "blackmisc/propertyindex.h"
+#include "blackmisc/blackmiscexport.h"
+
+#include <QString>
+
+namespace BlackMisc
+{
+    /*!
+     * Directories (swift data directories)
+     * \remark the main purpose of this class is to serve as setting's value object
+     */
+    class BLACKMISC_EXPORT CDirectories : public CValueObject<CDirectories>
+    {
+    public:
+        //! Properties by index
+        enum ColumnIndex
+        {
+            IndexDirFlightPlan = CPropertyIndex::GlobalIndexCDirectories,
+            IndexDirFlightPlanOrDefault,
+            IndexDirLastViewJson,
+            IndexDirLastViewJsonOrDefault,
+            IndexDirLastModelJson,
+            IndexDirLastModelJsonOrDefault,
+            IndexDirLastModelStashJson,
+            IndexDirLastModelStashJsonOrDefault
+        };
+
+        //! Constructor
+        CDirectories() {}
+
+        //! Flight plan directory
+        const QString &getFlightPlanDirectory() const { return m_dirFlightPlan; }
+
+        //! Flight plan directory or default
+        QString getFlightPlanDirectoryOrDefault() const;
+
+        //! Flight plan directory
+        void setFlightPlanDirectory(const QString &dir) { m_dirFlightPlan = dir; }
+
+        //! Last view JSON directory
+        const QString &getLastViewJsonDirectory() const { return m_dirLastViewJson; }
+
+        //! Has a view JSON directory?
+        bool hasLastViewJsonDirectory() const { return !m_dirLastViewJson.isEmpty(); }
+
+        //! Last view JSON directory or default
+        QString getLastViewJsonDirectoryOrDefault() const;
+
+        //! Last view JSON directory (default if not more specific)
+        void setLastViewJsonDirectory(const QString &dir) { m_dirLastViewJson = dir; }
+
+        //! Last view JSON model stash directory
+        const QString &getLastModelDirectory() const { return m_dirLastModelJson; }
+
+        //! Last view JSON model directory or default
+        QString getLastModelDirectoryOrDefault() const;
+
+        //! Last view JSON model directory
+        void setLastModelDirectory(const QString &dir);
+
+        //! Has a model JSON directory?
+        bool hasLastModelDirectory() const { return !m_dirLastModelJson.isEmpty(); }
+
+        //! Last view JSON model directory
+        const QString &getLastModelStashDirectory() const { return m_dirLastModelStashJson; }
+
+        //! Last view JSON model stash directory or default
+        QString getLastModelStashDirectoryOrDefault() const;
+
+        //! Last view JSON model stash directory
+        void setLastModelStashDirectory(const QString &dir);
+
+        //! \copydoc BlackMisc::Mixin::String::toQString
+        QString convertToQString(bool i18n = false) const;
+
+        //! \copydoc BlackMisc::Mixin::Index::propertyByIndex
+        CVariant propertyByIndex(const CPropertyIndex &index) const;
+
+        //! \copydoc BlackMisc::Mixin::Index::setPropertyByIndex
+        void setPropertyByIndex(const CPropertyIndex &index, const CVariant &variant);
+
+        //! Convert to directory
+        static QString fileNameToDirectory(const QString &fileName);
+
+    private:
+        QString m_dirFlightPlan;         //!< directory for flight plans
+        QString m_dirLastViewJson;       //!< last JSON save directory
+        QString m_dirLastModelJson;      //!< last JSON model directory
+        QString m_dirLastModelStashJson; //!< last JSON model stash save directory
+
+        //! Return checkDir if existing, defaultDir otherwise
+        QString existingOrDefaultDir(const QString &checkDir, const QString &defaultDir) const;
+
+        BLACK_METACLASS(
+            CDirectories,
+            BLACK_METAMEMBER(dirFlightPlan),
+            BLACK_METAMEMBER(dirLastViewJson),
+            BLACK_METAMEMBER(dirLastModelJson),
+            BLACK_METAMEMBER(dirLastModelStashJson)
+        );
+    };
+
+    namespace Settings
+    {
+        //! ATC stations settings
+        struct TDirectorySettings : public TSettingTrait<CDirectories>
+        {
+            //! \copydoc BlackCore::TSettingTrait::key
+            static const char *key() { return "swiftdirectories"; }
+
+            //! \copydoc BlackCore::TSettingTrait::humanReadable
+            static const QString &humanReadable() { static const QString name("swift directories"); return name; }
+        };
+    }
+} // namespace
+
+Q_DECLARE_METATYPE(BlackMisc::CDirectories)
+
+#endif // guard
diff --git a/src/blackmisc/propertyindex.h b/src/blackmisc/propertyindex.h
index 0b2e6ddf9..041161402 100644
--- a/src/blackmisc/propertyindex.h
+++ b/src/blackmisc/propertyindex.h
@@ -88,6 +88,7 @@ namespace BlackMisc
             GlobalIndexCCountry                         =   900,
             GlobalIndexCPlatform                        =  1000,
             GlobalIndexCApplicationInfo                 =  1100,
+            GlobalIndexCDirectories                     =  1200,
             GlobalIndexCCallsign                        =  2000,
             GlobalIndexCAircraftSituation               =  2100,
             GlobalIndexCAircraftSituationChange         =  2200,
diff --git a/src/blackmisc/registermetadata.cpp b/src/blackmisc/registermetadata.cpp
index 6bb6065fc..59262a97f 100644
--- a/src/blackmisc/registermetadata.cpp
+++ b/src/blackmisc/registermetadata.cpp
@@ -17,9 +17,11 @@
 #include "blackmisc/input/registermetadatainput.h"
 #include "blackmisc/geo/registermetadatageo.h"
 #include "blackmisc/pq/registermetadatapq.h"
+
 #include "blackmisc/applicationinfolist.h"
 #include "blackmisc/countrylist.h"
 #include "blackmisc/dbus.h"
+#include "blackmisc/directories.h"
 #include "blackmisc/iconlist.h"
 #include "blackmisc/identifierlist.h"
 #include "blackmisc/logcategorylist.h"
@@ -59,6 +61,7 @@ namespace BlackMisc
         CApplicationInfoList::registerMetadata();
         CCountry::registerMetadata();
         CCountryList::registerMetadata();
+        CDirectories::registerMetadata();
         CIcon::registerMetadata();
         CIconList::registerMetadata();
         CIdentifier::registerMetadata();
@@ -78,7 +81,6 @@ namespace BlackMisc
         CPropertyIndexVariantMap::registerMetadata();
         CRgbColor::registerMetadata();
         CStatusMessage::registerMetadata();
-        qDBusRegisterMetaType<CStatusMessage::StatusSeverity>();
         CStatusMessageList::registerMetadata();
         CValueCachePacket::registerMetadata();
         CVariant::registerMetadata();
diff --git a/src/blackmisc/statusmessage.cpp b/src/blackmisc/statusmessage.cpp
index aa3885137..9e6bbf14f 100644
--- a/src/blackmisc/statusmessage.cpp
+++ b/src/blackmisc/statusmessage.cpp
@@ -294,7 +294,8 @@ namespace BlackMisc
     void CStatusMessage::registerMetadata()
     {
         CValueObject<CStatusMessage>::registerMetadata();
-        qRegisterMetaType<StatusSeverity>();
+        qRegisterMetaType<CStatusMessage::StatusSeverity>();
+        qDBusRegisterMetaType<CStatusMessage::StatusSeverity>();
     }
 
     CStatusMessage::StatusSeverity CStatusMessage::stringToSeverity(const QString &severity)