The file 'Glider DG-1000 3D Printer Model' is (par,stl) file type, size is 7.7MB.
This is glider DG-1000.Wiki: http://en.wikipedia.org/wiki/DG_Flugzeugbau_DG-1000Blueprint: http://www.dg-flugzeugbau.de/index.php?id=dg1000-johnson-e
Model made in Solid Edge ST4