  ::::All the official sources avoid listing that number! The main problem is not with the aircraft design itself, but with the military specified equipment that added about 1400 lbs to the civil version. The other problem is that the military tried to use it to replace aircraft that it cannot replace, like the Kiowa in the LOH role or the Chinook with its 25,000 lb lift capacity. It really isn't a design deficiency problem, but more equipment, operational and political. There is a lot more, but no sources, yet! -   