Bell UH-1 D/H Iroquois “HUEY” (model 205)
Following the appearance of the Bell 204 (UH-1A), the US Army soon realized the potential of the new helicopter and thought of a larger version of it. Following the request made to Bell in 1960, in 1961 Bell presented the new model designated as Bell model 205, which was basically the same Bell 204 but 1.40 meters longer, which allowed installing 4 more passenger seats and a greater fuel load, as well as an auxiliary fuel tank. In August 1961, the US Army gave permission to begin production of the new Bell 205 (UH-1D) Huey, probably the most successful helicopter in history.
UH-1 D/H HUEY (model 205) gallery and more info