J-11B - An indigenised multirole fighter using a Flanker type airframe and advanced Chinese avionics, weaponry and technologies, reduced RCS, MAWS, IRST, and composites to lighten the airframe weight by 700 kg.[6][7][24][25] It has been said that the J-11B is over 90% indigenous.[26] It has been reported that more than 2 regiments of J-11B are currently in service. In May 2007, the existence of J-11B was confirmed by the Chinese government for the first time when state-run Chinese TV stations aired a report on the J-11B in PLAAF service. It has been claimed that the J-11B is planned to incorporate an AESA radar.[27] China has developed another new airborne AESA radar which can track a 1 m2 target at 450 km, a 0.4 m2 target at 280 km, and a 0.1 m2 target at 250 km, which is likely to be used on the J-11B, J-15, and J-16
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