Air New Zealand have grounded, according to this news report, 4 of its 787 fleet due to Rolls Royce engine problems. They are wearing out sooner than expected. This last week on two consecutive days two of their aircraft had to return to the airport with engine problems. Other international airlines are also having problems with these engines and are cancelling flights.
Story and a video here:
http://www.independent.co.uk/travel/...-a8099201.html
Story and pictures here:
https://www.newsroom.co.nz/2017/12/0...ged-787-engine