Some observations:
Considering that failure of these cone bolts is a known factor (as pointed out by
VB), surely these components would be under scrutiny for fatigue cracking (NDT inspections) How did the defective bolts slip through the system? -fatigue cracks take time to develop.
If the CAAs assertion that there were deficiencies in NW maintenance procedures, and considering that it was only a modicum of good luck and exemplerary flying by the aircrew that prevented a catastrophy, then the CAA failed completely in it's role of protecting the safety of the flying public. Why did it take a major incident to invoke CAA action? This indicates a complete failure of their auditing and oversight function.
A well worded statement from Nationwide (factual accuracy to be verified).