The engine issues both happened on Boeing 787 Dreamliner planes flying out of Auckland bound for global destinations.
That engine, on Tuesday morning's flight NZ99 bound for Tokyo with 282 people on board had to be shut down when it caused the aircraft to shake violently.
In the most recent incident a 787 was taking off from Auckland when the pilots noticed problems.
Air New Zealand Ltd on Thursday said it would cancel and delay some global flights over the coming weeks because engines on its Boeing Co 787-9 jets manufactured by Rolls-Royce Holdings PLC required early maintenance.
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Air New Zealand is cancelling some flights and retiming others due to maintenance requirements on the Rolls-Royce Trent 1000 engines that power its Boeing 787-9 fleet.
"Rolls-Royce does not have any replacement engines available while this maintenance work is undertaken which means some schedule changes are unavoidable".
According to the New Zealand Herald, passengers on the flight to Tokyo reported hearing "weird noises" and said the aircraft was shaking throughout the flight.
The Aviation Analysis Wing website reports this is the second engine vibration incident involving Rolls Royce Trent series engines this year.
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Parents are able to pick up their children at 516 and Mesa Verde, after they are checked in and accounted for. Schools in the area are taking the proper precautions to ensure the safety of their students and faculty.
Customers are encouraged to check this first before calling the airline's contact centre.
Earlier this year, Virgin Atlantic switched one of its daily trans-Atlantic flights to Delta Air Lines, which bought a 49% stake in Virgin Atlantic in 2012, to allow the Trent 1000 engines mounted on its 787 Dreamliners to undergo maintenance.
"The new flight to Auckland will increase convenience for our customers and demonstrates our commitment to the New Zealand market", he added.
In response to the latest troubles Rolls said: "It's not uncommon for long-term engine programmes to experience technical issues during their life and we manage them through proactive maintenance".
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