#include <simgear/structure/event_mgr.hxx>
#include <simgear/sound/soundmgr_openal.hxx>
#include <simgear/misc/ResourceManager.hxx>
+#include <simgear/props/propertyObject.hxx>
#include <Aircraft/controls.hxx>
#include <Airports/runways.hxx>
channellist( NULL )
{
simgear::ResourceManager::instance()->addProvider(new AircraftResourceProvider());
+ simgear::PropertyObjectBase::setDefaultRoot(props);
}