According to domestic media reports, July 6, 2013 16 am, the fourth-generation stealth fighter F -20 again from 2002 prototype aircraft factory in Chengdu, take off, fly to Xi'an flight test center. This indicates that the F -20 flight test work has entered a new phase.
Last May 12, 2001, the first prototype flew flight test center, test work began stereotypes. 7 months after the last December 5, 2002, the first prototype flew Flight Test Center, January 11, 2013 back to Chengdu. (Source: Global Network Source: Strategic Network F -20 Army fans home)