Sir Peter Jackson's private jet is involved in the search for missing Malaysia Airlines flight MH370.
The plane disappeared about an hour into a flight from Kuala Lumpur to Beijing on March 8, with 239 people on board. It is believed to have changed course and to have crashed into the Indian Ocean, west of Perth.
The Joint Agency Co-ordination Centre, which is co-ordinating the Perth-based search, said a civilian jet was being used as a communications relay for military aircraft searching for the airliner. It would not comment further, Radio NZ reported.
A spokesperson for Sir Peter confirmed his Gulfstream G650 jet was being used in the search.
The G650 flies faster and further than any aircraft used by the Royal New Zealand Air Force.
Its top speed of about 1140kmh is close to the speed of sound (1234kmh), and it has a range of 12,960km, allowing non-stop flights between Wellington and Los Angeles.