will be largely down to him.
Let's be generous and say it
might be
partly down to him. Of course the BOI and its recommendations had nothing to do with it. Nor the review of airworthiness. Nor the review of engineering procedures.
As Mad Mark has pointed out already Lies and Statistics, I guess if you pulled a print-off of all the IRs produced for each of the acft types we operate you would get several thousand hits. I know I have submitted a few, on all of the types I have flown. Most were fairly innocuous, the figures quoted above are meaningless without context!!