Douglas C-47 Skytrain Low-poly 3D model is available on CGTrader for $5. Original author: sinan-alzayde.
BLEND (Blender, filesize: 144 MB), BLEND (Blender, filesize: 144 MB), OBJ (OBJ, filesize: 1.84 MB), FBX (Autodesk FBX, filesize: 141 MB), DAE (Collada, filesize: 3.19 MB)