My trade training notes. AP3279, AL7, Feb 1970. Para 30 is of course qualified elsewhere by the instructions when to use a new stiffnut (see previous post). A locknut is different from a stiffnut, although commonly used as a generic term. Often the difference is unimportant. Here, it is. (The one at bottom right is used in the seat).
I agree with your point that the problem is inconsistency across training and pubs. My point is that anyone using the same training I had would have followed this and the shackle would have been free to move. And the evidence, revealed in the judge's remarks, confirmed maintainers at other RAF stations stated one thread.
