Maybe it's just not possible to build a heavy (-ish) helicopter than can stand the strain of routine day-out day for many years in N Sea type ops without getting a severe mechanical failure
I'm sure it is
they thought that the years and millions of hours in military service would mean that just flying to/from platforms would be a coast.
How did the inspection routines change from military to civilian service? How did the usage of the aircraft (MAUM, high cruise speeds etc) differ from the military flight regimes?
What do the Puma/S92 engineers on this forum think can be done to minimise the likelyhood of this happening again (on a regular basis)
I suspect the answers to that cost money in terms of increased servicing, reduced TBOs and accepting a weight penalty (at the expense of passenger/mile costs) to ensure robust engineering in the first place.
The 'race to the bottom' often quoted on this forum regarding offshore ops has a lot to answer for - not directly so that one could take legal action, but indirectly by shaving margins off the operating costs whilst generating enormous profits to keep the stock exchange and the investors sweet.