Check out isometrical helicopter parking Low-poly 3D model on CGTrader for $39. High-quality mesh by OlegShuldiakov: 2800 polys, 4600 vertices. Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 2.36 MB), MA (Autodesk Maya, filesize: 2.36 MB), JPG (JPG, filesize: 2.36 MB)