The normal arrangement with new aircraft is the lead operators help iron out all the teething problems and maintenance programs. I’m not sure how that arrangement has done with all the financial cuts as the large operators who would normally do this try and compete with the budget airlines who just sit back and benefit from years of collaboration by others and then get slated for their high prices…
BA is one example of an operator taking a significant role in this with their maintenance bases such as the ones in South Wales (747 & 777) and North East England (737 I believe if not others).
A few ideas spring to mind:
the strain on this type of operator-manufactuer relationship means we are seeing these failures
the media love to make a big deal out of things
they are rushing too much?
it’s just the adoption of lots of new technology and finer margins as they try and extract every last bit of efficiency?
Contracting parts out to companies who use engineers that might not have spend as long ‘in the trade’ as in the old days so there is not the experience in the actual application that you used to see?
they will get there in the end I’m sure.