Every Concorde in the BA fleet required a bespoke set of tank liners during the post crash mod programme.
BAe were caught out by the non similarity of the Nimrod fuselage to wing joints during the MRA4 saga.
It is all hardly surprising as until recently the techniques used for building large aircraft would have been familiar to a 1940s shipbuilder.
Engineering fitters work to the nearest thou, carpenters to the nearest eighth and dockyards work to the nearest ship!
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