747 200 Sud
I'd like to find out more about the background/manufacture process relating to conversion of 747 200 to SUD model, I believe KLM just retired theirs, but did/do any other airlines fly this derivative? Is there anywhere I can find out more about when and why they converted the aircraft (vs buying 300 models). Actually I may be mistaken but I am assuming they were originally normal 100/200 series models and converted post manufacture...quite a major re-manufacture job I would think.