When 46 arrived at Waddington, all the Engines, including the APU, were returned to manufacture.
Without these Anti Deteriation Runs could not be carried out so the servicability of major flight systems could not be assesed and she was preped for storage
A few minor and major components, difficult to demand anymore, were removed to service the R1 fleet.
(On a light note The right hand stone guard on XW665 was 46s)
And it was deamed Cheaper and quicker by the RAF to Strip and Fly it in an Antonov, than Detach a team from kinloss to basiclly rebuild the Aircraft, bear in mind the R1 groundcrew are not authrized to work on MR2s