The airline celebrated its one millionth passenger in June 2000 and commenced wet-lease operation for its parent JAL in December 2000. On 14 November 2002, JAL introduced a new aircraft livery design, "The Arc of the Sun", across the JAL Group fleet. A reception to celebrate the completion of the first aircraft with the new design was held at the JAS M2 hangar. In April 2005, the McDonnell Douglas MD-81 was introduced to the airline fleet, with an all Economy Class configuration with 163 seats. JAL Express became an affiliate member of Oneworld on April 1, 2007, together with four of its sister airlines, in the alliance's biggest expansion in its young history. On the same day, the airline celebrated its tenth anniversary of establishment.