In message , " snipped-for-privacy@thetaylorfamily.org.uk" writes
I guess you haven't served in the RAF? Taking parts from one unserviceable aircraft to fit to another unserviceable aircraft in order to produce one serviceable aircraft is normal practice. It's colloquially known as 'robbing'. The difference between normal practice and the situation in May 1982, is that the documentation (Form 700?) which records *everything* that is done to an aircraft was not being maintained for the scrapped aircraft. Hence if someone robbed an altimeter, say, from one of the scrapped aircraft no record would be made. If it was then fitted to an in-service aircraft, *it's* Form 700 would record the fact that the altimeter had been replaced. That doesn't make the altimeter 'junk'.
I note your smiley, but your original post "And even THEN they had to phone around, dig through personal parts bins and recycle junk to do it" was b*ll*cks, after all.