The Boeing 787-9 is the second and newest member of the 787 family, largely made of lightweight carbon fibre and with new aerodynamic features.
With the fuselage stretched 6m over the 787-8, the 787-9 can fly more passengers and more cargo further but claims fuel savings of 20 per cent over older similar size aircraft.
The Dreamliner programme was beset by delays before delivery and problems with its lithium ion batteries soon after entering service in 2011. Earlier this year airlines operating the plane were reminded of the need to periodically ''reboot'' it on the ground after concerns were raised about it being continuously run.
Thirty customers from around the world have ordered 509 787-9s as at last month.
Air New Zealand flies its Dreamliners mainly to China and Japan.