#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/props/tiedpropertylist.hxx>
-#include <simgear/math/SGMath.hxx>
#include <Navaids/positioned.hxx>
#include <Instrumentation/rnav_waypt_controller.hxx>