The Jian-10 (J-10) is a multirole, all-weather fighter aircraft designed for both air-to-air and air-to-ground missions. The aircraft was designed by the Chengdu Aircraft Design Institute (611 Institute) and built by the Chengdu Aircraft Corporation (CAC) of AVIC. The aircraft has been operational with the PLA Air Force (PLAAF) since 2003. The J-10 is available in the single-seat fighter variant J-10 and two-seater fighter-trainer variant J-10S. A further improved single-seat fighter variant designated J-10B reportedly made its maiden flight in February 2009.
Jian-10B Multirole Fighter Aircraft
The J-10B is a modified variant of the J-10 multirole fighter aircraft, with modifications in airframe and avionics. Chengdu Aircraft Corporation (CAC) of AVIC began to develop a follow-on variant of its J-10 fighter around 2004/05. A J-10B prototype reportedly made its maiden flight in December 2008. Photos of the aircraft began on emerge on the Chinese Internet in March 2009. Once commissioned, the J-10B is likely going to become the standard for later J-10 productions.
sources: Sino Defence , Air Attack