RE the demise of the type. I believe that they were withdrawn from use in the UK not because of Westland, but because Rolls-Royce stopped supporting the engines in the normal way i.e. PBH (power by the hour). The new payment scheme meant that they were no longer a commercially viable option for BIH. The american aircraft were sitting in a hangar in Tucson at this time and I think The Pawan Hans Indian machines had also been grounded by the Indian CAA, their grounding being another story....
Variable Load