Air New Zealand Ltd. said Friday it will partner with Rolls-Royce Group Plc. o conduct the first commercial trial of a Boeing 747 aircraft part-run on biofuel by early 2009. New Zealand's national carrier, 76%-owned by the government, said it had signed a memorandum of understanding with aircraft manufacturer Boeing and engine maker Rolls-Royce to work together on projects to make commercial aviation more environmentally sustainable. The first part of this agreement is a trial of a Boeing 747 flight part run on blended biofuel, which will take place in the second half of 2008 or early 2009. The flight is likely to depart from Auckland, but will not carry customers, the company said. Only one Rolls-Royce engine of the aircraft will run on a blended mix of biofuel and kerosene with the other three powered by regular aviation fuel. "Air New Zealand is keen to encourage research into alternative fuels and wants to work hand-in-hand with industry partners and the New Zealand government on promoting this type of activity," said Air New Zealand Chief Executive Rob Fyfe. The world looking for other energy ressources then oil rectification...