SGPropertyNode *has_gs_node;
SGPropertyNode *loc_node;
SGPropertyNode *loc_dist_node;
SGPropertyNode *gs_deflection_node;
SGPropertyNode *gs_rate_of_climb_node;
SGPropertyNode *gs_dist_node;
SGPropertyNode *has_gs_node;
SGPropertyNode *loc_node;
SGPropertyNode *loc_dist_node;
SGPropertyNode *gs_deflection_node;
SGPropertyNode *gs_rate_of_climb_node;
SGPropertyNode *gs_dist_node;