Dartman : Yes that was more the answer I was looking for. Boss raptor explanations obvioulsy show that it was not as simple a question as I thought, and I bow to his superior knowledge.
I was just trying to get a rough idea of what was involved, but I understand there is no typical example. So say a 747. engines rebuilt, re wired, re weighed, re wired, tyres, re painted, re-rigged of sorts(I realize its not powered by cables mind!), interior refitted, instruments checked and serviced??? That sort of thing. Cheers.