In 1981, Air New Zealand introduced its first Boeing 747 airliner, and a year later initiated service to London via Los Angeles. The five 747-200s owned by Air New Zealand were all named after ancestral Maori canoes. 1985 saw the introduction of Boeing 767-200ER airliners to fill the large size gap between the Boeing 737 and 747 (the DC-8 and DC-10 had been withdrawn by 1983). In 1989 the airline was privatised with a sale to a consortium headed by Brierley Investments. (with remaining stakes held by Qantas, Japan Airlines, American Airlines, and the New Zealand government). The New Zealand air transport market underwent deregulation in 1990, prompting Air New Zealand to acquire a 50% stake in Ansett Transport Industries in 1995.