In the most recent incident a 787 was taking off from Auckland when the pilots noticed problems. They shut down the engine and returned to the airport. Another flight earlier this week bound for Buenos Aires experienced similar issues. No one was injured in either event.
Air New Zealand is the latest Rolls customer to suffer problems with the Trent 1000 engines on the 787. Japanese airline ANA first reported issues with Trent 100s in the summer of 2016. The problem was thought to relate to blades in the turbine corroding far earlier than expected, resulting in the engines being shut down. A few weeks later Virgin Atlantic said it was had also experienced similar troubles with its Trent 1000 engines.
Both airlines took aircraft out service for urgent maintenance, causing hundreds of flight cancellations.