About This File
X-Plane 9.70+ Mil V-12, (1968) world's heaviest helicopter. The Mil V-12, given the project number Izdeliye 65, remains the largest helicopter ever built. The designation "Mi-12" would have been the name for the production helicopter, and was not applied to the V-12 prototypes. Important: please read the included documentation. By Billy Bargagliotti.