Rockwell OV-10A Bronco Series FSX Low-poly (Polygon mesh 3D model) is available on CGTrader for $22.99. Original author: Iskhafel.
STL (Stereolithography, filesize: 2.08 MB), OBJ (OBJ, filesize: 8.38 MB), BIP (KeyShot, filesize: 3.12 MB), BLEND (Blender, filesize: 10.2 MB), FBX (Autodesk FBX, filesize: 2.01 MB)