Reuters reported this morning that Air New Zealand had said that "two recent events" involving Rolls-Royce's Trent 1000 engines had prompted it to cancel and delay some global flights over the coming weeks.
The airline is cancelling and rescheduling some global flights due to the incidents.
A second issue arose on Wednesday on a flight to Buenos Aires, Argentina, after it experienced an engine issue shortly after leaving Auckland and was also forced to return.
However, an Air New Zealand spokesperson says these were two different aircraft.
On Tuesday morning an Air New Zealand 787 bound for Narita, Japan experience engine abnormality, and returned to Auckland airport after the crew shut down the engine.
The Trent 1000 engine has had a number of technical hitches, which the manufacturer has been working hard to resolve, with a wide range of operators in recent years.
Air New Zealand is cancelling and delaying some flights due to problems with Rolls-Royce Holdings' (LON:RR) engines, Reuters has reported.
"At this stage our investigation team is satisfied that all parties are doing the right things to ensure the continuing safety of the travelling public".
"Under the alliance, Singapore Airlines has access to New Zealand's domestic, Australia and Pacific Islands network, and similarly Air New Zealand to over 50 destinations throughout Singapore Airlines' South East Asia, Europe and South Africa network", says Mr Tasker.
She added that if the Commission felt that changes at any time, then it could issue urgent recommendations while inquiries continued. In addition to this, the latest available information on any schedule changes will be published to the Travel Alerts section of the Air New Zealand website, an airline statement said.