And now the latest batch of J-15 fighters (J-15B) is using the WS-10 ... the Taihang has truly come a long wayAt no point was there any disruption where the PLAAF went back to the AL-31 for the J-11 except for the J-15 which always used the Russian naval version while the corrosion resistant variant of the WS-10 wasn't considered satisfactory or wasn't ready, whichever that was.