China Aviation Expo

An expo visitor stands in front of models of military and civilian aircraft made by Aviation Industry Corporation of China (AVIC) at an aviation expo in Beijing, Wednesday, Sept. 25, 2013.  [Photo: AP]

Ihssane Mounir, Boeing's senior vice president of sales and marketing for greater China and Korea, speak at an aviation expo in Beijing, China, Wednesday, Sept. 21, 2011. Mounir says China will likely need about 5,000 new planes over the next 20 years as air travel expands in synch with rising incomes.  [Photo: AP]

A visitor looks at a Leap-X fan property technology design by Safran, a French aerospace and defense manufacturer, on display at the China Aviation Expo in Beijing, China, Wednesday, Sept. 23, 2009.  [Photo: AP]

Visitors check a model of Boeing 747-8 airplane at an aviation expo in Beijing, China, Wednesday, Sept. 21, 2011. A top Boeing executive says China's fast growing demand for aircraft is influencing how the company designs and markets planes. [Photo: AP]