Pipistrel sinus Low-poly 3D model is available on CGTrader for $30. Original author: rombynas. Specs: 4189 polys, 4581 verts.
OBJ (OBJ, filesize: 3.49 MB), FBX (Autodesk FBX, filesize: 3.6 MB), OTHER (Other, filesize: 10.6 MB), MAX (Autodesk 3ds Max, filesize: 3.54 MB)