Chinese Navy spokesman unveiled on December 17th that a fighter of East China Sea Fleet crashes in Zhejiang province during a night drill of that day, and two pilots ejected safely.
The crashed fighter jet has been judged a two-seat version J-10 fighter with Russian AL-31FN engine.
J-10 with a single AL-31FN engine has crashed for several times, and China is now equipping more and more homemade WS-10A engines for J-10 series.