Introduction of blended winglets in the Air New Zealand's fleet of five Boeing 767-300ER aircrafts is proving more fuel efficient than expected by the carrier.

It has been delivering 19 per cent higher fuel saving as per current data. The blended winglets would reduce drags to make air wings efficient, making the crafts more fuel saving.

General Manager Airline Operations Captain David Morgan said, "The installation of the blended winglets is part of Air New Zealand's on-going drive to be the world's most environmentally sustainable airline."

The carrier may reduce fuel usage by more than seven million liters with the new installation. The new system, developed by Aviation Partners Boeing, would also reduce 18,400 tonnes of carbon emissions thus reducing environmental pollution. The refitted aircraft would become operational in early November with enhanced payload performance and faster climbing.

The airline has always remained active for reducing emission and making the flight operations more effective and fuel saving.