An Air New Zealand Boeing 787-9 Dreamliner remained grounded in Singapore late into Friday evening after its departure to Auckland was delayed that morning.
A passenger who asked not to be identified said he had been told the delay was due to an issue with one of the aircraft's engines, and the flight was delayed as a precaution.
A statement issued to Newshub from the airline confirmed the flight was yet to leave Changi Airport.
"Flight NZ281 from Singapore to Auckland has been delayed by just over 23 hours due to an engineering issue.
Customers are being rebooked on alternative services and have been offered meal vouchers and accommodation in Singapore. We sincerely apologise to customers for the inconvenience," a spokesperson said.
In December 2017, Air NZ's schedule was thrown into chaos after some of their Dreamliners were taken out of action due to what the airline called "engine abnormalities".