X-Plane 9.60+ Chengdu J-20 Fighter. The Chengdu J-20 is a fifth generation stealth, twin-engine fighter aircraft prototype developed by Chengdu Aircraft Industry Group for the Chinese Peoples Liberation Army Air Force. In late 2010, the J20 underwent high speed taxiing tests. The J-20 made its first flight on 11 January 2011. General He Weirong, Deputy Commander of the Peoples Liberation Army Air Force said in November 2009 that he expected the J-20 to be operational in 2017a_"2019. In order to lock on to a target using missiles, you must have a joystick or key assigned to the "target select up" and/or "target select down" functions. Click a missile on the primary MFD to arm it. When enemy aircraft are nearby, you can use the target select controls to assign targets for your missiles to seek out. With a target which is not currently visible selected, the HUD will show a red arrow pointing in the direction of the target. If the active target is visible on screen within the HUD, however, a targeting reticle will appear around the aircraft, as in the image on the right. By Fabrice Kauffmann.