/usr/share/openscenegraph/examples/osghangglide/ is in openscenegraph-examples 3.2.3+dfsg1-2ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/openscenegraph/examples/osghangglide/GliderManipulator.cpp
/usr/share/openscenegraph/examples/osghangglide/GliderManipulator.h
/usr/share/openscenegraph/examples/osghangglide/base.cpp
/usr/share/openscenegraph/examples/osghangglide/hat.cpp
/usr/share/openscenegraph/examples/osghangglide/hat.h
/usr/share/openscenegraph/examples/osghangglide/osghangglide.cpp
/usr/share/openscenegraph/examples/osghangglide/sky.cpp
/usr/share/openscenegraph/examples/osghangglide/tank.cpp
/usr/share/openscenegraph/examples/osghangglide/terrain.cpp
/usr/share/openscenegraph/examples/osghangglide/terrain_coords.h
/usr/share/openscenegraph/examples/osghangglide/terrain_normals.h
/usr/share/openscenegraph/examples/osghangglide/terrain_texcoords.h
/usr/share/openscenegraph/examples/osghangglide/trees.cpp