Air New Zealand has been forced to cancel several flights after problems with Rolls Royce engines have grounded the carriers' Boeing 787-9 Dreamliners.
"Rolls-Royce has advised that some of the Trent 1000 engines in the airline's Boeing 787-9 fleet require maintenance sooner than previously indicated," Air New Zealand said in a statement on Thursday.
New Zealand's Transport Accident Investigation Commission is investigating after two international flights from Auckland had to return with engine problems this week.
Air New Zealand says Rolls-Royce does not have any replacement engines available while this maintenance work is undertaken which means some schedule changes are unavoidable.
The airlines was also trying to secure replacement aircraft in the meantime.
Air New Zealand was the first airline in the world to take delivery of a 787-9 in 2014 and now operates 10 of the aircraft.
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