Air New Zealand is set to significantly reschedule some of its flights due to maintenance required on its A320/21NEO engines.
The national carrier said changes would be made to flights taking off from January onwards but did not say how many customers would be affected.
Airlines around the world have been affected by the issue, flagged by aerospace giant RTX which has revealed multiple durability problems in up to 700 of its Pratt & Whitney Geared Turbofan engines - all of which must be removed for maintenance.
Air NZ has 16 of the affected aircraft in its A320 fleet.
The airline said while the maintenance didn't present a safety issue, it would "further reduce engine availability and is expected to have a significant impact on the airline's schedule" from January.
Air NZ said customers booked on rescheduled flights would be advised once the impacts had been assessed.
"Pratt & Whitney has indicated that the revised maintenance plan will be completed within the next two months," the airline said in a statement to the NZX.
"While there is no immediate impact to Air New Zealand's flights, it is likely the airline will need to make adjustments to its schedule in coming months, some of which may be significant.
"The airline requests customers: do not call its contact centre. Customers will be advised once the impacts on the schedule have been assessed."
