Originally Posted by
DaveReidUK
If the the Shorts-built Canberras were anything like the Skyvan, which was practically hand-built, their dimensions probably varied slightly between any two airframes on the production line.
Doesn't surprise me; Tucano was similar. As a member of the RAF's engineering development team I made a liaison visit to the factory about halfway through the production run and found that they still did not have many of the jigs fully commissioned.
Example; forward fuselage frames, longerons and stringers fully jigged, but no accommodation for aligning the pre-cut skin panel. Quote; "We line the skin panel up by eye, inspector says "ok", and we start drilling". Consequently, no two aircraft had the internals in exactly the same place when we opened an access panel.