floydbloke:
Air NZ use B787-9 on that route and I saw the other day there is a worldwide shortage of the RR Trent 1000 engines, meaning their maintenance schedule gets messed up which could have contribute to historical cancellation. They will stop flying NZ26 to Chicago from the end of this month to mitigate this somewhat.
Was just about to point that out. Could just be juggling available planes around to fit routes if some are being serviced. https://www.rnz.co.nz/news/business/511473/air-new-zealand-suspends-chicago-service-after-rolls-royce-engine-headaches


