The Chengdu J-20 (Jian-20, simplified Chinese: -二十; traditional Chinese: -二十; pinyin: Jiān r shí) is a fifth-generation, stealth, twin-engine prototype fighter aircraft developed by the Chengdu Aircraft Industry Group. for the Chinese People's Liberation Army Air Force (PLAAF). The J-20 made its first flight on January 11, 2011. General He Weirong, Deputy Commander of the People's Liberation Army Air Force said in November 2009 that he expected the J-20 to be operational in 2017-2019