In 1987 the Bureau named after Kamov built the new version of Ka-126 helicopter on the base of Ka-26 helicopter. Ka-126 is a modernization of multipurpose Ka-26. The major difference of Ka-126 from its predecessor is the power plant. New turbo-prop engine TV-0-100 530kW developed by Motor construction design bureau, VR-126 reduction gear and new transmission were installed on this type. The helicopter was designed for performing aviation tasks in agriculture and forestry, as well as for cargo and civil transportation. The export modification Ka-128 was developed on the basis of Ka-126. On the export version it was foreseen to install French engine Ariel 1D1 731kW.